Fix heading level of 'Try' section

It was agreed to be '## Try:' but there were many files where it was
'### Try:'. This has been corrected.

2012/blakely/README.md

@@ -23,7 +23,7 @@ For more detailed information see [2012 blakely in bugs.md](/bugs.md#2012-blakel
 ```
 
 
-### Try:
+## Try:
 
 ```sh
 ./blakely "xx*yy*+" 64 > paraboloid.gif

2012/deckmyn/README.md

@@ -23,7 +23,7 @@ For more detailed information see [2012 deckmyn in bugs.md](/bugs.md#2012-deckmy
 ```
 
 
-### Try:
+## Try:
 
 ```sh
 ./try.sh

2012/dlowe/README.md

@@ -23,7 +23,7 @@ For more detailed information see [2012 dlowe in bugs.md](/bugs.md#2012-dlowe).
 ```
 
 
-### Try:
+## Try:
 
 ```sh
 ./dlowe

2012/endoh1/README.md

@@ -18,7 +18,7 @@ Another version is the deobfuscated version provided by the author as well.  See
 ```
 
 
-### Try:
+## Try:
 
 ```sh
 ./endoh1 < endoh1.c

2012/endoh2/README.md

@@ -24,7 +24,7 @@ gcc -o e e.c
 ...
 
 
-### Try:
+## Try:
 
 ```sh
 ./try.sh

2012/grothe/README.md

@@ -22,7 +22,7 @@ more shared files with their proper numbers):
 ```
 
 
-### Try:
+## Try:
 
 ```sh
 ./grothe -grothe.c 1+grothe.c.1 2+grothe.c.2

2012/hamano/README.md

@@ -12,7 +12,7 @@ make
 ```
 
 
-### Try:
+## Try:
 
 ```sh
 ./try.sh

2012/hou/README.md

@@ -12,7 +12,7 @@ make
 ```
 
 
-### Try:
+## Try:
 
 ```sh
 ./try.sh

2012/kang/README.md

@@ -15,7 +15,7 @@ echo "full spelling of an English cardinal numeral less than a quadrillion" | ./
 ```
 
 
-### Try:
+## Try:
 
 ```sh
 ./try.sh # try various languages

2012/konno/README.md

@@ -17,7 +17,7 @@ code](#alternate-code) below.
 NOTE: N is an integer from 0 to 255.
 
 
-### Try:
+## Try:
 
 ```sh
 ./try.sh

2012/omoikane/README.md

@@ -28,7 +28,7 @@ file or use the [alternate version](#alternate-code) which reads in the compiled
 binary itself.
 
 
-### Try:
+## Try:
 
 ```sh
 ./try.sh

2012/tromp/README.md

@@ -35,7 +35,7 @@ cat binary-prog.Blc data | ./tromp
 ```
 
 
-### Try:
+## Try:
 
 ```sh
 ./try.sh

2012/vik/README.md

@@ -54,7 +54,7 @@ To extract the embedded PNG:
 ```
 
 
-### Try:
+## Try:
 
 ```sh
 ./try.sh

2012/zeitak/README.md

@@ -18,7 +18,7 @@ where `file.c` is the file to be checked for nesting errors. For example, you ma
 try [incorrect.c](incorrect.c) and the program itself.
 
 
-### Try:
+## Try:
 
 ```sh
 make test