move spaces doc into room section

docs/development.md

@@ -13,11 +13,4 @@ Matrix is an open standard, the details of interoperable communication using the
 
 Since it is free software, improvement requests can be converted into direct programming jobs.
 
-Currently still in development, and can be promoted/accelerated by orders/donations, are among others
+Discussions on the topic can be held in [#matrix:matrix.org](https://matrix.to/#/#matrix:matrix.org).
-
-* chat export
-* Threading (more clearly arranged discussions)
-* personal status
-* various integrations / bots / bridges
-
-Discussions on the topic can be held in [#envs:envs.net](https://matrix.to/#/#envs:envs.net).

docs/index.md

@@ -41,6 +41,7 @@ In recent years, the need for supporting digital tools for team collaboration ha
     * [Sharing rooms and making them public](/rooms/sharing/)
     * [Find rooms](/rooms/find/)
     * [Delete and leave rooms](/rooms/delete/)
+    * [Spaces](/rooms/spaces/) (a collection of rooms)
 * [Fine-tune notifications](notifications.md)
 * [Use integrations, bridges, bots (e.g. Jitsi)](/advanced/integrations/)
 * [More Clients](/clients/more_clients.md)

docs/rooms.md

@@ -12,3 +12,4 @@ Category is about
 - [Find rooms](/rooms/find/)
 - [Delete rooms](/rooms/delete/)
 - [Share rooms](/rooms/sharing/)
+- [Spaces](/rooms/spaces/) (a collection of rooms)

mkdocs.yml

@@ -49,11 +49,11 @@ nav:
         - Find rooms: rooms/find.md
         - Delete rooms: rooms/delete.md
         - Share rooms: rooms/sharing.md
+        - Spaces: rooms/spaces.md
         - Message retention policies: rooms/retention_policies.md
     - Notifications: notifications.md
     - Encryption: encryption.md
     - Advanced:
-        - Spaces: advanced/spaces.md
         - Integrations: advanced/integrations.md
         - Abuse Management: advanced/abuse_management.md
         - Bridges: advanced/bridges.md