README.md and Makefile files from various years

These are mostly just formatting fixes but there might be some typos
here and there.

These years have not been checked thoroughly but I made fixes and want
them in for when I do work on them.

As far as the Makefiles go: notes were added that correspond to the
notes in the README.md files which is why I have put them in the same
commit.

1991/buzzard/README.md

@@ -10,17 +10,17 @@
 
         make all
 
-### To run
+### To run:
 
 	./buzzard
 
-## Judges' comments
+## Judges' comments:
 
 You will be A-mazed.
 
 You are invited to try to cheat, ... if you can figure out how!  :-)
 
-## Author's comments
+## Author's comments:
 
 ### HOW TO PLAY: