* Warn against using Let's Encrypt certs for encrypted TURN

This helps to avoid client-side issues:
* https://github.com/vector-im/element-android/issues/1533
* https://github.com/vector-im/element-ios/issues/2712



Signed-off-by: Andrew Ferrazzutti <fair@miscworks.net>

Signed-off-by: Andrew Ferrazzutti <fair@miscworks.net>

Signed-off-by: Ashwin S. Nair <58840757+Ashwin-exe@users.noreply.github.com>

Port 5349, not 5479.

* Labeled a lot more code blocks with the appropriate type
* Fixed a couple of minor typos (missing/extraneous commas)

Signed-off-by: Sumner Evans <me@sumnerevans.com>

Fixes #10121

Signed-off-by: Rohan Sharma <rhnsharma5113@gmail.com>

Signed-off-by: rht <rhtbot@protonmail.com>

Some hopefully-useful notes on setting up a turnserver.

put the 2nd part of the "source installation"-section into a new section, because it also applies to Debian packages

Converting some of the rst documentation to markdown.  Attempted to
preserve whitespace and line breaks to minimize cosmetic change.