Rename how-to-bugfix.md to how-to-help.md

This is because it doesn't really say how to fix a bug (how could it
when the bugs can be all sorts of different things) but rather a
more general how to help with bugs and other things. It's not just bugs
but other issues with entries or even the website. Thus how-to-help.md
is a better name.

how-to-help.md

@@ -0,0 +1,39 @@
+# How to submit a fix to an IOCCC entry
+
+If you see a problem with an IOCCC entry, first check the [known bugs](bugs.md)
+file.  In some cases what you might think of as a bug is instead a known
+feature.  In some cases the bug is known, but no fix has ever been submitted.
+In other cases you may have found a new problem.
+
+If you do have a fix, and the [known bugs](bugs.md) file **does not recommend
+against fixing it**, then please consider opening a [GitHub pull
+request](https://github.com/ioccc-src/winner/pulls) against the master
+[branch](https://github.com/ioccc-src/winner/branches) of the [ioccc-src/winner
+repo](https://github.com/ioccc-src/winner) repo.
+
+BTW: A **problem** is not limited to the code itself.  Fixing typos in files
+such as "_README.md_" files, fixing issues in a "_Makefile_", or otherwise
+correcting an IOCCC winner is **VERY MUCH WELCOME**!  Please use the same
+[GitHub pull request](https://github.com/ioccc-src/winner/pulls) process against
+the master [branch](https://github.com/ioccc-src/winner/branches) of the
+[ioccc-src/winner repo](https://github.com/ioccc-src/winner) repo.
+
+NOTE: some of the issues in the [bugs.md](/bugs.md) file includes just missing
+files and we welcome these too!
+
+**Please also help us fix typos and / or otherwise improve the write-up** of how
+IOCCC winning entries are presented!
+
+In any event we will happily add you to the
+[thanks-for-fixes.md](/thanks-for-fixes.md) file for your help!
+
+And of course, an IOCCC winner may update their own entries
+(metadata as well as source code and any extra files) by opening a
+[GitHub pull request](https://github.com/ioccc-src/winner/pulls)
+against the master [branch](https://github.com/ioccc-src/winner/branches)
+of the [ioccc-src/winner repo](https://github.com/ioccc-src/winner)
+repo.
+
+Note that we're much more inclined to accept an author's fixes but the judges
+have the final say in the matter.
+