Fix html files in 2001

This also includes a few updates to the bugs file.

2001/williams/README.md

@@ -4,7 +4,7 @@
     make
 ```
 
-NOTE: this entry requires the `X11/Xlib.h` header file and the X11 library to
+**NOTE**: this entry requires the `X11/Xlib.h` header file and the X11 library to
 compile.  For more information see the
 FAQ on "[X11](../../faq.html#X11)".