Update notes on unmaintained providers (#400)

* Mark Jellyfin unmaintained

* Change note to warning

Author: OzGav

docs/music-providers/jellyfin.md

@@ -7,6 +7,9 @@ description: Documentation for using the Jellyfin music provider
 
 Music Assistant has support for music servers which work to the Jellyfin definition. This component was contributed by [lokiberra](https://github.com/lokiberra) and maintained by lokiberra and [jc2k](https://github.com/jc2k)
 
+!!! warning 
+    Please be advised that this provider currently has no dedicated developer. Issues may take longer to resolve as this will be maintained on a best effort basis. Consider sharing your music directly with MA instead
+
 ## Features
 
 |           |                     |

docs/music-providers/plex.md

@@ -2,7 +2,7 @@
 
 Music Assistant has support for using Plex (MusicLibrary). Contributed by [micha91](https://github.com/micha91)
 
-!!! note 
+!!! warning 
     Please be advised that this provider currently has no dedicated developer. Issues may take longer to resolve as this will be maintained on a best effort basis. Consider sharing your music directly with MA instead
 
 ## Features