Manifest updates

Typo fixes and change 'download entry source' to 'download entry' as
it's the tarball, not the source itself.

Rebuilt .entry.json and index.html files for all entries.

2013/cable3/index.html

@@ -524,7 +524,7 @@ the source size down. Other compilers are likely to produce similar warnings.</p
 <li><a href="screenshot_win3_on_macosx.png">screenshot_win3_on_macosx.png</a> - Screenshots of some applications running on macOS</li>
 <li><a href="sc-ioccc.terminal">sc-ioccc.terminal</a> - configuration file will correctly display console apps</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2013/cable3/bios.asm">bios.asm</a> - BIOS source in assembly</li>
-<li><a href="2013_cable3.tar.bz2">2013_cable3.tar.bz2</a> - download entry source</li>
+<li><a href="2013_cable3.tar.bz2">2013_cable3.tar.bz2</a> - download entry</li>
 </ul>
 <h2 id="secondary-files">Secondary files</h2>
 <ul>