fix many internal links

Fixed a number of internal links that need to
go to the GitHub site.

Ran `make www` to perform the above.

2019/endoh/README.md

@@ -35,7 +35,7 @@ If you have `gdb(1)` installed:
 ```
 
 Note that in macOS installing `gdb(1)` takes multiple steps - it's not just a
-matter of installing `gdb(1)` and that's that. The [try.sh](try.sh) script has
+matter of installing `gdb(1)` and that's that. The [try.sh](%%REPO_URL%%/2019/endoh/try.sh) script has
 only been tested with linux.
 
 You might also wish to try:

2019/endoh/index.html

@@ -391,7 +391,7 @@ this entry because it is SUPPOSED to crash and it needs debugging symbols.</p>
 <p>If you have <code>gdb(1)</code> installed:</p>
 <pre><code>    ./try.sh</code></pre>
 <p>Note that in macOS installing <code>gdb(1)</code> takes multiple steps - it’s not just a
-matter of installing <code>gdb(1)</code> and that’s that. The <a href="try.sh">try.sh</a> script has
+matter of installing <code>gdb(1)</code> and that’s that. The <a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2019/endoh/try.sh">try.sh</a> script has
 only been tested with linux.</p>
 <p>You might also wish to try:</p>
 <pre><code>    gdb ./prog || lldb ./prog</code></pre>