add contact.md markdown file

In preparation for converting markdown files to HTML, added
`contact.md` with improved "see the FAQs" / "use pull request" /
"open GitHub action" suggestions instead of sending Email.

Fixed a few typos in `faq.md`.  Added / fixed links into most section 5 FAQs.

contact.md

@@ -0,0 +1,42 @@
+# WAIT!!! - Before you send that Email
+
+If you are trying to:
+
+* Fix a winning IOCCC entry - (see [FAQ 5.2](/faq.md#fix_a_winner))
+* Update winning author information - (see [FAQ 5.5)(/faq.md#fix_author))
+* Correct a web site problem - (see [FAQ 5.4](/faw.md#fix_web_site) or [FAQ 5.6](/faq.md#fix_link))
+
+Instead of sending us Email, **Please** consider using the [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).
+
+If you are trying to:
+
+* Report a bug in an IOCCC winner - (see [FAQ 5.1](/faq.md#report_bug))
+* Report an IOCCC web site problem - (see [FAQ 5.3](/faq.md#report_web_problem))
+* Report a broken or wrong web link - (see [FAQ 5.6](/faq.md#fix_link))
+
+Instead first look at the [IOCCC
+issues](https://github.com/ioccc-src/winner/issues) to see if the
+problem has already been reported.  If it has been reported, feel
+free to add a comment to the issue.  If you do not find an it has
+been reported, then fee free to open a [new IOCCC
+issue](//github.com/ioccc-src/winner/issues).
+
+See the above FAQ entries for more details.
+
+# If you really need to send Email the IOCCC judges
+
+Did you look at the above section?
+
+If you must contact the IOCCC judges by email, then please send email to:
+[q.YYYY@ioccc.org](mailto:q.YYYY@ioccc.org?subject=IOCCC%20YYYY%20question%20<===%20You%20MUST%20change%20YYYY%20to%20the%204-digit%20year%20in%20both%20the%20To%20address%20and%20Subject,%20then%20remove%20this%20arrow%20note%20from%20the%20subject%20line!)
+
+**IMPORTANT:** The _YYYY_ in the above Email address **MUST** be changed to the current 4 digit year!
+
+You **MUST** include the following two words (separated by a space) in the subject of your email, otherwise the email will be rejected:
+
+    IOCCC YYYY
+
+**IMPORTANT:** The _YYYY_ in the above Email address **MUST** be changed to the current 4 digit year!