fix more broken markdown links

Fixed stuff we broke by mistake, previously.

Ran `make www` to perform the above.

TODO: Fix stuff we broke by mistake doing the above.

TODO: Fix more broken markdown links.

2012/tromp/index.html

@@ -418,8 +418,8 @@ Location: <a href="../../location.html#US">US</a> - <em>United States of America
 are more obfuscated than the entry itself.</p>
 <h2 id="authors-remarks">Author’s remarks:</h2>
 <p>This program celebrates the close connection between obfuscation and conciseness,
-by implementing the most concise language known, <a href="https://tromp.github.io/cl/Binary_lambda_calculus.html">Binary Lambda Calculus
-(BLC)</a>.</p>
+by implementing the most concise language known, BLC:
+<a href="https://tromp.github.io/cl/Binary_lambda_calculus.html">Binary Lambda Calculus</a>.</p>
 <p><a href="https://tromp.github.io/cl/Binary_lambda_calculus.html">BLC</a> was developed to
 make <a href="https://en.wikipedia.org/wiki/Algorithmic_information_theory">Algorithmic Information
 Theory</a>, the