Manifest update - mostly resolves #1933

Although there were a few lines that I kind of looked over quickly, not
evaluating the files in question, those seemed in good state anyway.
Often that was binary files.

In some cases for example input more information was given but not in
all as it was not always clear what it should be and it was not always
clear that it was necessary. Some typos were fixed as well.

Rebuilt .entry.json and index.html files.

A few other files were also modified with some minor fixes like
2006/toledo2/README.md for one example. In that case I believe some
binary files were referenced as %%REPO_URL%% but that is incorrect.
These files were edited before the index.html files were rebuilt so they
should be fine.

It should be noted that although I have gone through the entire manifest
and it might be that issue #1933 can be closed there is still a chance
that when I go through the web pages that I might come across a problem
that I will fix at that time. This might or might not be needed but that
will be determined later.

Now might be a good time to run make www but I will worry about that
later (it might or might not even do anything, depending on what was
missed).

2013/cable3/index.html

@@ -774,7 +774,7 @@ the source size down. Other compilers are likely to produce similar warnings.</p
 <li><a href="screenshot_qbasic.png">screenshot_qbasic.png</a> - Screenshots of some applications running on macOS</li>
 <li><a href="screenshot_simcity.png">screenshot_simcity.png</a> - Screenshots of some applications running on macOS</li>
 <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="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2013/cable3/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/sc-ioccc.terminal">sc-ioccc.terminal</a> - config for macOS to correctly display ANSI graphics 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>
 </ul>
 <h2 id="secondary-files">Secondary files</h2>
@@ -783,7 +783,7 @@ the source size down. Other compilers are likely to produce similar warnings.</p
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2013/cable3/README.md">README.md</a> - markdown source for this web page</li>
 <li><a href="bios">bios</a> - custom BIOS</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2013/cable3/.entry.json">.entry.json</a> - entry summary and manifest in JSON</li>
-<li><a href="fd.img">fd.img</a> - DOS boot sector</li>
+<li><a href="fd.img">fd.img</a> - FreeDOS boot disk</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2013/cable3/.gitignore">.gitignore</a> - list of files that should not be committed under git</li>
 <li><a href="hd.img">hd.img</a> - disk image</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2013/cable3/.path">.path</a> - directory path from top level directory</li>