* Create /page/xmpp
* Fix inconsistent name for XMPP contacts
* Add link to /page/xmpp in index.html
* Requested changes in Pull Request
- Fix Wikipedia link
- Ari is not an owner of the service
* Requested changes in Pull Request
- Better wording for /page/xmpp link
* replace occurances of 'Matrix' with 'XMPP'
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Co-authored-by: Ari Archer <ari.web.xyz@gmail.com>