Fix capitalization: Dimension Integration Manager → Dimension integration manager

Based on https://github.com/turt2live/matrix-dimension
> An open source integration manager for matrix clients, like Element.

"Dimension" is one of the integration managers, and it is not something like Dimension Integration Manager, which could be abbreviated as DIM.

Also:
- Replace "integrations manager" with "integration manager"
- Fix typos
- Remove a line break

Signed-off-by: Suguru Hirahara <acioustick@noreply.codeberg.org>

docs/container-images.md

@@ -84,7 +84,7 @@ These services are not part of our default installation, but can be enabled by [
 
 - [icewind1991/mx-puppet-steam](https://hub.docker.com/r/icewind1991/mx-puppet-steam) - the [mx-puppet-steam](https://github.com/icewind1991/mx-puppet-steam) bridge to [Steam](https://steampowered.com) (optional)
 
-- [turt2live/matrix-dimension](https://hub.docker.com/r/turt2live/matrix-dimension) - the [Dimension](https://dimension.t2bot.io/) integrations manager (optional)
+- [turt2live/matrix-dimension](https://hub.docker.com/r/turt2live/matrix-dimension) - the [Dimension](https://dimension.t2bot.io/) integration manager (optional)
 
 - [jitsi/web](https://hub.docker.com/r/jitsi/web) - the [Jitsi](https://jitsi.org/) web UI (optional)