Fixes to thanks for fixes file

At least one entry was missing (1984/anonymous).

Some entries were removed. One such entry was not ever broken but
instead when I had renamed a file (to markdown) I forgot to update the
DATA variable in the Makefile which then broke compilation. This was
seen in the log and mistakenly believed that there was something wrong
with the entry when there wasn't. Other entries removed were not fixes
but notes.

Various README.md files have been updated for this sometimes just
formatting merely because I opened the file because for instance there
is an alternate version (many by me) that is referred to. I'd not be
surprised if more README.md files have to be updated for this much
better system but these will be found in time when I do another pass
(and some years I have not checked at all yet).

1998/schweikh1/README.md

@@ -14,6 +14,9 @@ Germany
 make all
 ```
 
+An alternate version for this entry works with macOS. See the Alternate code
+section below for more details.
+
 
 ## To run:
 
@@ -23,11 +26,11 @@ make all
 
 ### Alternate code:
 
-As noted above the alternate version works with macOS but there are some important notes as
-well as a description of how it works (spoilers for the original version as
-well).
+As noted above the alternate version works with macOS but there are some
+important notes as well as a description of how it works (spoilers for the
+original version as well).
 
-An MacBook Pro Max with the M1 chip some header files report an
+With a MacBook Pro Max with the M1 chip some header files report an
 unsupported architecture and unsupported compiler (error, warning).
 However the defines are still found okay.
 
@@ -60,7 +63,14 @@ This allows for opening the right files. The problem with the macOS is
 `/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include` which is why
 the different command line and the different numbers.
 
-To use this version use `schweikh1.alt` instead.
+To use this version use:
+
+
+```sh
+make alt
+```
+
+Use `schweikh1.alt` as you would `schweikh1` above.
 
 
 ## Judges' remarks:
@@ -73,7 +83,7 @@ standard headers.
 
 This code is a wonder; it's a wonder that it compiles.  I wonder
 whether or not it should.  The innovative realization that you can
-use special characters, such as `'\n'`, in #file directives alone
+use special characters, such as `'\n'`, in `#file` directives alone
 merits some recognition.
 
 I've included most of the author's remarks; they're fairly thorough.