Update documentation for 0.23 (#2096)

* docs/acl: fix path to policy file

* docs/exit-node: fixup for 0.23

* Add newlines between commands to improve readability
* Use nodes instead on name
* Remove query parameter from link to Tailscale docs

* docs/remote-cli: fix formatting

* Indent blocks below line numbers to restore numbering
* Fix minor typos

* docs/reverse-proxy: remove version information

* Websocket support is always required now
* s/see detail/see details

* docs/exit-node: add warning to manual documentation

* Replace the warning section with a warning admonition
* Fix TODO link back to the regular linux documentation

* docs/openbsd: fix typos

* the database is created on-the-fly

* docs/sealos: fix typos

* docs/container: various fixes

* Remove a stray sentence
* Remove "headscale" before serve
* Indent line continuation
* Replace hardcoded 0.22 with <VERSION>
* Fix path in debug image to /ko-app/headscale

Fixes: #1822

aa

docs/acls.md

@@ -52,7 +52,7 @@ a server they can register, the check of the tags is done on headscale server
 and only valid tags are applied. A tag is valid if the user that is
 registering it is allowed to do it.
 
-To use ACLs in headscale, you must edit your config.yaml file. In there you will find a `acl_policy_path: ""` parameter. This will need to point to your ACL file. More info on how these policies are written can be found [here](https://tailscale.com/kb/1018/acls/).
+To use ACLs in headscale, you must edit your `config.yaml` file. In there you will find a `policy.path` parameter. This will need to point to your ACL file. More info on how these policies are written can be found [here](https://tailscale.com/kb/1018/acls/).
 
 Here are the ACL's to implement the same permissions as above: