Fix typos, formatting and thank yous (add links)

In some files changed the formatting was fixed to be a proper markdown
file.

There were some typos including that some README.md files that linked to
/winners.html#Cody_Boone_Ferguson actually linked to the non-existent
file /years which obviously would not work.

I also added links to the rest of the places I have fixed entries (but
see below) and I did the same for Yusuke Endoh's fixes.

As well apparently one entry I thought he fixed to compile under modern
systems does not seem to so that entry will have to be revisited another
time. That entry was 1993/jonth.

Those are the main changes here if not all of them.

1984/decot/README.md

@@ -6,10 +6,12 @@ Dave Decot
 
         make all
 
-NOTE: On modern systems this entry requires the option `-traditional-cpp` which
-clang does not support. We thank Yusuke Endoh for his patch which allows the
-entry to compile under gcc! Please be advised that gcc under macOS is actually
-clang so this will not compile with the default gcc under macOS.
+NOTE: [Yusuke Endoh](/winners.html#Yusuke_Endoh) supplied a patch so that this
+entry would compile with gcc.
+
+NOTE: this entry requires a compiler that supports `-traditional-cpp`. Note that
+clang does not support it and in macOS gcc is actually clang so this will not
+compile with the default compiler in macOS.
 
 ## To run: