Slight change in 'greater challenge' line

In the line in README.md and index.html files that said:

    ### NOTICE to those who wish for a greater challenge

I added a ':' at the end of the line.

There were some entries that had a link fix in the index.html file but I
only looked up through 1995/leo as those still have to have a 'look and
feel' check and it would just slow things down.

2019/adamovsky/README.md

@@ -254,7 +254,7 @@ were shuffled both for `S` functions and Apply functions in the same way to hide
 the meaning of `f` and `r` prefixes.
 
 
-### NOTICE to those who wish for a greater challenge
+### NOTICE to those who wish for a greater challenge:
 
 **If you want a greater challenge, don't read any further**:
 just try to understand the program via the source.

2019/adamovsky/index.html

@@ -570,7 +570,7 @@ continuation and exit functions were swapped. The names of <code>S</code> and Ap
 were shuffled both for <code>S</code> functions and Apply functions in the same way to hide
 the meaning of <code>f</code> and <code>r</code> prefixes.</p></li>
 </ul>
-<h3 id="notice-to-those-who-wish-for-a-greater-challenge">NOTICE to those who wish for a greater challenge</h3>
+<h3 id="notice-to-those-who-wish-for-a-greater-challenge">NOTICE to those who wish for a greater challenge:</h3>
 <p><strong>If you want a greater challenge, don’t read any further</strong>:
 just try to understand the program via the source.</p>
 <p>If you get stuck, come back and read below for additional hints and information.</p>

2019/burton/README.md

@@ -62,7 +62,7 @@ Included is a test script, useful for the corner cases.  As in all good Unix
 programs, it is silent upon success; any output demonstrates an error.
 
 
-### NOTICE to those who wish for a greater challenge
+### NOTICE to those who wish for a greater challenge:
 
 **If you want a greater challenge, don't read any further**:
 just try to understand the program without running the command below.

2019/burton/index.html

@@ -429,7 +429,7 @@ The output should look familiar.</p>
 <h3 id="description">Description:</h3>
 <p>Included is a test script, useful for the corner cases. As in all good Unix
 programs, it is silent upon success; any output demonstrates an error.</p>
-<h3 id="notice-to-those-who-wish-for-a-greater-challenge">NOTICE to those who wish for a greater challenge</h3>
+<h3 id="notice-to-those-who-wish-for-a-greater-challenge">NOTICE to those who wish for a greater challenge:</h3>
 <p><strong>If you want a greater challenge, don’t read any further</strong>:
 just try to understand the program without running the command below.</p>
 <p>If you get stuck, come back and run the following command:</p>

2019/dogon/README.md

@@ -245,7 +245,7 @@ This uses only 19 bitwise operations and six shifts to calculate the inner 6x6
 next generation bits of the input 8x8 !
 
 
-### NOTICE to those who wish for a greater challenge
+### NOTICE to those who wish for a greater challenge:
 
 **If you want a greater challenge, don't read any further**:
 just try to understand the program via the source.

2019/dogon/index.html

@@ -578,7 +578,7 @@ most obfuscated way of calculating the GOL function on a 64 bits <code>8*8</code
     (ts1 | s1)) &amp; ((ts0 ^ s0) | a); }</code></pre>
 <p>This uses only 19 bitwise operations and six shifts to calculate the inner 6x6
 next generation bits of the input 8x8 !</p>
-<h3 id="notice-to-those-who-wish-for-a-greater-challenge">NOTICE to those who wish for a greater challenge</h3>
+<h3 id="notice-to-those-who-wish-for-a-greater-challenge">NOTICE to those who wish for a greater challenge:</h3>
 <p><strong>If you want a greater challenge, don’t read any further</strong>:
 just try to understand the program via the source.</p>
 <p>If you get stuck, come back and read below for additional hints and information.</p>

2019/duble/README.md

@@ -251,7 +251,7 @@ it works on macOS too!  I must confess it was challenging to remain below the
 size limit with this little change.
 
 
-### NOTICE to those who wish for a greater challenge
+### NOTICE to those who wish for a greater challenge:
 
 **If you want a greater challenge, don't read any further**:
 just try to understand the program via the source.

2019/duble/index.html

@@ -551,7 +551,7 @@ maybe not reduce consumption, but consume them differently… And I obtained
 <a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2019/duble/prog.c">prog.c</a>. With this version, no need to touch <code>sysctl</code> parameters, and
 it works on macOS too! I must confess it was challenging to remain below the
 size limit with this little change.</p>
-<h3 id="notice-to-those-who-wish-for-a-greater-challenge">NOTICE to those who wish for a greater challenge</h3>
+<h3 id="notice-to-those-who-wish-for-a-greater-challenge">NOTICE to those who wish for a greater challenge:</h3>
 <p><strong>If you want a greater challenge, don’t read any further</strong>:
 just try to understand the program via the source.</p>
 <p>If you get stuck, come back and read below for additional hints and information.</p>

2019/lynn/README.md

@@ -95,7 +95,7 @@ compiler when run on itself. This intermediate output is hopefully difficult to
 understand, yet is accepted by our compiler:
 
 
-### NOTICE to those who wish for a greater challenge
+### NOTICE to those who wish for a greater challenge:
 
 **If you want a greater challenge, don't read any further**:
 just try to understand the program without running the command below.

2019/lynn/index.html

@@ -447,7 +447,7 @@ and shows GHC also accepts our subset of Haskell:</p>
 instead provide <a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2019/lynn/hint.hs">hint.hs</a>, the output of a certain stage of the
 compiler when run on itself. This intermediate output is hopefully difficult to
 understand, yet is accepted by our compiler:</p>
-<h3 id="notice-to-those-who-wish-for-a-greater-challenge">NOTICE to those who wish for a greater challenge</h3>
+<h3 id="notice-to-those-who-wish-for-a-greater-challenge">NOTICE to those who wish for a greater challenge:</h3>
 <p><strong>If you want a greater challenge, don’t read any further</strong>:
 just try to understand the program without running the command below.</p>
 <p>If you get stuck, come back and run the following command:</p>

2019/poikola/README.md

@@ -228,7 +228,7 @@ compilers. Small change in code can produce really unexpected results, i.e. the
 compiler can skip a few expressions or statements without obvious reason.
 
 
-### NOTICE to those who wish for a greater challenge
+### NOTICE to those who wish for a greater challenge:
 
 **If you want a greater challenge, don't read any further**:
 just try to understand the program via the source.

2019/poikola/index.html

@@ -521,7 +521,7 @@ prime</a> is missing from output.</p>
 achieve exactly the same output from different optimization levels and
 compilers. Small change in code can produce really unexpected results, i.e. the
 compiler can skip a few expressions or statements without obvious reason.</p>
-<h3 id="notice-to-those-who-wish-for-a-greater-challenge">NOTICE to those who wish for a greater challenge</h3>
+<h3 id="notice-to-those-who-wish-for-a-greater-challenge">NOTICE to those who wish for a greater challenge:</h3>
 <p><strong>If you want a greater challenge, don’t read any further</strong>:
 just try to understand the program via the source.</p>
 <p>If you get stuck, come back and read below for additional hints and information.</p>