fix markdown links to .txt files that use a %%TOKEN%%

1992/ant/index.html

@@ -411,7 +411,7 @@ figure out where.</p>
 Interested POSIX balloters should lobby the IEEE for an obfuscated
 P1003 subcommittee.</p>
 <h2 id="authors-remarks">Author’s remarks:</h2>
-<p>See the file <a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1992/ant/ant.README.txt">ant.README.txt</a>.</p>
+<p>See the file <a href="ant.README.txt">ant.README.txt</a>.</p>
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