docs: update documentation to reflect recent changes/additions (#1730) [skip ci]

* docs: update documentation to reflect recent changes/additions

* docs: add list of third-party integrations

* docs: add v3 warning

* docs: fix Docker for Windows link text

* docs: fix Telegram 'Send Silently' setting description

* docs: note that application URL is required for password reset/generation

* docs: add additional details on webhook template variables

docs/extending-overseerr/reverse-proxy.md

@@ -1,4 +1,4 @@
-# Reverse Proxy Examples
+# Reverse Proxy
 
 {% hint style="warning" %}
 Base URLs cannot be configured in Overseerr. With this limitation, only subdomain configurations are supported.

docs/extending-overseerr/third-party.md

@@ -0,0 +1,13 @@
+# Third-Party Integrations
+
+{% hint style="warning" %}
+We do not officially support these third-party integrations. If you run into any issues, please seek help on the appropriate support channels for the integration itself!
+{% endhint %}
+
+- [Organizr](https://organizr.app/), a HTPC/homelab services organizer
+- [Heimdall](https://github.com/linuxserver/Heimdall), an application dashboard and launcher
+- [LunaSea](https://docs.lunasea.app/modules/overseerr), a self-hosted controller for mobile and macOS
+- [Requestrr](https://github.com/darkalfx/requestrr/wiki/Configuring-Overseerr), a Discord chatbot
+- [ha-overseerr](https://github.com/vaparr/ha-overseerr), a custom Home Assistant component
+- [OverCLIrr](https://github.com/WillFantom/OverCLIrr), a command-line tool
+- [Overseerr Exporter](https://github.com/WillFantom/overseerr-exporter), a Prometheus exporter