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.

2000/dlowe/index.html

@@ -551,7 +551,7 @@ therein.</p></li>
 <li><p>The points and ways in which C and Perl connect are <em>really</em>
 obscure. They’re also incredibly poorly documented, as they’re
 primarily used in machine-generated code. However, there’s a
-wealth of example code on <a href="https://www.cpan.org">CPAN (www.cpan.org)</a>.</p></li>
+wealth of example code on <a href="https://www.cpan.org">CPAN</a>.</p></li>
 <li><p>The Perl API functions are almost all macros, so you will probably
 find that preprocessor expansion will only make things worse. They
 also have helpful, verbose names like <code>SvNV</code>, <code>SvIV</code>, and <code>newSVpv</code>. I