Format and typo fixes to 1984 README.md files

I paid a lot of attention to 1984/mullender partly because it is one of
Landon's all time favourite entries to this day and partly because it
felt like it was a good idea especially as there is a lot of
instructional value in the author's remarks that I located a while back.
However this did take quite some time so I probably won't do that for
many more entries if any more as it will slow things down tremendously.
There was an unfortunate typo fix in this README.md too: a typo in the
file, possibly a typo from the copy paste (think I copied from an image
but it might have been a pdf too in which case the original person
adding the remarks in the book cited made a typo / copy-pasted the
information from the author), which could cause confusion when reading
the remarks.

1984/laman/README.md

@@ -18,12 +18,12 @@ make all
 ### INABIAF - it's not a bug it's a feature :-)
 
 This entry will very likely crash or do something else if you run it without an
-arg.
+arg. It likely won't do anything at all if the arg is not a positive number.
 
 
 ## Try:
 
-The program accepts ONE POSITIVE argument.  Seeing is believing, so try things
+The program accepts ONE POSITIVE number.  Seeing is believing, so try things
 like:
 
 ```sh