add checkmark to the narbar of all constructed HTML

We added a checkmark all narbar's that has the make effect of
clicking on the **Nu HTML check this web page** link at the very
bottom.  This makes it much more convenient when one needs
to quickly check the HTML of a number of web pages.

Run `make www` to perform the above.

1986/applin/index.html

@@ -127,6 +127,7 @@
   <a class="Right" href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1986/applin/applin.c">C code</a>
   <a class="Right" href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1986/applin/Makefile">Makefile</a>
   <a class="Right" href="#inventory">Inventory</a>
+  <a class="Right" href="https://validator.w3.org/nu/?doc=https%3A%2F%2Fioccc-src.github.io%2Ftemp-test-ioccc%2F1986%2Fapplin%2Findex.html">&#x2713;</a>
 </div>
 
 <!-- END: this line ends content from: inc/navbar.first.html -->

1986/august/index.html

@@ -127,6 +127,7 @@
   <a class="Right" href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1986/august/august.c">C code</a>
   <a class="Right" href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1986/august/Makefile">Makefile</a>
   <a class="Right" href="#inventory">Inventory</a>
+  <a class="Right" href="https://validator.w3.org/nu/?doc=https%3A%2F%2Fioccc-src.github.io%2Ftemp-test-ioccc%2F1986%2Faugust%2Findex.html">&#x2713;</a>
 </div>
 
 <!-- END: this line ends content from: inc/navbar.mid.html -->

1986/bright/index.html

@@ -127,6 +127,7 @@
   <a class="Right" href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1986/bright/bright.c">C code</a>
   <a class="Right" href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1986/bright/Makefile">Makefile</a>
   <a class="Right" href="#inventory">Inventory</a>
+  <a class="Right" href="https://validator.w3.org/nu/?doc=https%3A%2F%2Fioccc-src.github.io%2Ftemp-test-ioccc%2F1986%2Fbright%2Findex.html">&#x2713;</a>
 </div>
 
 <!-- END: this line ends content from: inc/navbar.mid.html -->

1986/hague/index.html

@@ -127,6 +127,7 @@
   <a class="Right" href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1986/hague/hague.c">C code</a>
   <a class="Right" href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1986/hague/Makefile">Makefile</a>
   <a class="Right" href="#inventory">Inventory</a>
+  <a class="Right" href="https://validator.w3.org/nu/?doc=https%3A%2F%2Fioccc-src.github.io%2Ftemp-test-ioccc%2F1986%2Fhague%2Findex.html">&#x2713;</a>
 </div>
 
 <!-- END: this line ends content from: inc/navbar.mid.html -->

1986/holloway/index.html

@@ -127,6 +127,7 @@
   <a class="Right" href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1986/holloway/holloway.c">C code</a>
   <a class="Right" href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1986/holloway/Makefile">Makefile</a>
   <a class="Right" href="#inventory">Inventory</a>
+  <a class="Right" href="https://validator.w3.org/nu/?doc=https%3A%2F%2Fioccc-src.github.io%2Ftemp-test-ioccc%2F1986%2Fholloway%2Findex.html">&#x2713;</a>
 </div>
 
 <!-- END: this line ends content from: inc/navbar.mid.html -->

1986/index.html

@@ -125,6 +125,7 @@
   <a class="Left" href="../years.html">&uarr; top &uarr;</a>
   <a class="Left" href="../1987/index.html">1987 &rarr;</a>
   <a class="Right" href="#inventory">Inventory</a>
+  <a class="Right" href="https://validator.w3.org/nu/?doc=https%3A%2F%2Fioccc-src.github.io%2Ftemp-test-ioccc%2F1986%2Findex.html">&#x2713;</a>
 </div>
 
 <!-- END: this line ends content from: inc/navbar.year.mid.html -->

1986/marshall/compilers.html

@@ -122,6 +122,7 @@
 
 <div class="navbar">
   <a class="Left" href="index.html">&uarr; jump to index.html &uarr;</a>
+  <a class="Right" href="https://validator.w3.org/nu/?doc=#">&#x2713;</a>
 </div>
 
 <!-- END: this line ends content from: inc/navbar.up2index.html -->

1986/marshall/index.html

@@ -127,6 +127,7 @@
   <a class="Right" href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1986/marshall/marshall.c">C code</a>
   <a class="Right" href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1986/marshall/Makefile">Makefile</a>
   <a class="Right" href="#inventory">Inventory</a>
+  <a class="Right" href="https://validator.w3.org/nu/?doc=https%3A%2F%2Fioccc-src.github.io%2Ftemp-test-ioccc%2F1986%2Fmarshall%2Findex.html">&#x2713;</a>
 </div>
 
 <!-- END: this line ends content from: inc/navbar.mid.html -->

1986/pawka/index.html

@@ -127,6 +127,7 @@
   <a class="Right" href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1986/pawka/pawka.c">C code</a>
   <a class="Right" href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1986/pawka/Makefile">Makefile</a>
   <a class="Right" href="#inventory">Inventory</a>
+  <a class="Right" href="https://validator.w3.org/nu/?doc=https%3A%2F%2Fioccc-src.github.io%2Ftemp-test-ioccc%2F1986%2Fpawka%2Findex.html">&#x2713;</a>
 </div>
 
 <!-- END: this line ends content from: inc/navbar.mid.html -->

1986/stein/index.html

@@ -127,6 +127,7 @@
   <a class="Right" href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1986/stein/stein.c">C code</a>
   <a class="Right" href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1986/stein/Makefile">Makefile</a>
   <a class="Right" href="#inventory">Inventory</a>
+  <a class="Right" href="https://validator.w3.org/nu/?doc=https%3A%2F%2Fioccc-src.github.io%2Ftemp-test-ioccc%2F1986%2Fstein%2Findex.html">&#x2713;</a>
 </div>
 
 <!-- END: this line ends content from: inc/navbar.mid.html -->

1986/wall/index.html

@@ -127,6 +127,7 @@
   <a class="Right" href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1986/wall/wall.c">C code</a>
   <a class="Right" href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1986/wall/Makefile">Makefile</a>
   <a class="Right" href="#inventory">Inventory</a>
+  <a class="Right" href="https://validator.w3.org/nu/?doc=https%3A%2F%2Fioccc-src.github.io%2Ftemp-test-ioccc%2F1986%2Fwall%2Findex.html">&#x2713;</a>
 </div>
 
 <!-- END: this line ends content from: inc/navbar.last.html -->