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.

1985/lycklama/index.html

@@ -127,6 +127,7 @@
   <a class="Right" href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1985/lycklama/lycklama.c">C code</a>
   <a class="Right" href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1985/lycklama/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%2F1985%2Flycklama%2Findex.html">&#x2713;</a>
 </div>
 
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