fix many internal links

Fixed a number of internal links that need to
go to the GitHub site.

Ran `make www` to perform the above.

1994/dodsond2/README.md

@@ -84,8 +84,8 @@ in an effort to get around the 1994 version of Rule 2:
        followed by either whitespace or end of file, must be <= 1536.
 ```
 
-Indeed, when [dodsond2.gz](dodsond2.gz) is uncompressed, it is identical
-to the [dodsond2.c](%%REPO_URL%%/1994/dodsond2/dodsond2.c) file you find today.
+Indeed the [dodsond2.c](%%REPO_URL%%/1994/dodsond2/dodsond2.c) file is
+what you find today.
 
 The IOCCC rules and guidelines were modified in an effort to address
 this fun "_abuse of the rules_" style hack.