Our documentation has a history of using a document's name as a way to link to it, such as "See [workers.md]() for details". This makes sense when you're traversing a directory of files, but less sense when the files are abstracted away - as they are on the documentation website.

This PR changes the links to various documentation pages to something that fits better into the surrounding sentence, as you would when making any hyperlink on the web.

* Fix broken links in documentation

* newsfile

Signed-off-by: Savyasachee Jha <savya.jha@hawkradius.com>

It should be possible to reload `synapse.target` to have the reload propagate
to all the synapse units.

Signed-off-by: Emelie <em@nao.sh>

Simplify and update this documentation, and make it part of the core dist.