Fix links etc. through 2011 in thanks file

thanks-for-help.html

@@ -3579,15 +3579,15 @@ controls, width and height.</p>
 <h3 id="winning-entry-source-code-vik.c">Winning entry source code: <a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2011/vik//vik.c">vik.c</a></h3>
 </div>
 <p><a href="#cody">Cody</a> added the <a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2011/vik/try.sh">try.sh</a> script.</p>
-<p>Cody also added an <a href="2011/vik/index.html#alternate-code">alternate version</a> for Windows
+<p>Cody also added an <a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2011/vik/vik.alt.c">alternate version</a> for Windows
 based on the author’s comments (along with looking up the function for the right
-header files). To build try the alt rule of the Makefile.</p>
+header files). To build try the <code>alt</code> rule of the <code>Makefile</code>.</p>
 <div id="2011_zucker">
 <h2 id="winning-entry-2011zucker">Winning entry: <a href="2011/zucker/index.html">2011/zucker</a></h2>
 <h3 id="winning-entry-source-code-zucker.c">Winning entry source code: <a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2011/zucker//zucker.c">zucker.c</a></h3>
 </div>
 <p><a href="#cody">Cody</a> added the <a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2011/zucker/try.sh">try.sh</a> script.</p>
-<p>Cody also added <a href="2011/zucker/index.html#alternate-code">alternate code</a> that should work on
+<p>Cody also added <a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2011/zucker/zucker.alt.c">alternate code</a> that should work on
 Windows, based on the author’s remarks that if the system distinguishes binary
 and text then <code>stdout</code> needs to be set to binary mode.</p>
 <p>Cody also added the PDF file