Fix minor typos. Mention that mod_ssl is part of Apache-2.0.

Change absolute self-references to relative jumps.

TODO:
* IMHO the topic ToC3 should be deleted completely.
* All references to "patch Apache" or "EAPI patch" should be removed
* A native english speaker might want to proof-read the doc and polish it


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@92887 13f79535-47bb-0310-9956-ffa450edef68