chore: update unsupported features page

docs/userguide/unsupported.md

@@ -1,18 +1,16 @@
 Not all features or settings of a GitHub organization and its associated resources can be managed
 by the means of `otterdog`. The following non-exhaustive list outlines settings that are currently not supported:
 
-- setting the profile picture of an organization or a social media preview for a repository [#119](https://gitlab.eclipse.org/eclipsefdn/security/otterdog/-/issues/119)
+- setting the profile picture of an organization or a social media preview for a repository [#119](https://github.com/eclipse-csi/otterdog/issues/119)
+- manage items that should be visible on the main page, i.e. releases, packages, deployments
 - manage default repository labels on organization level
-- manage custom properties
-- organization rulesets (only rulesets on repo level are supported atm)
 - secrets and variables for codespaces and dependabot
 - managing GitHub apps or oauth policies
 - managing pinned repositories for an organization
-- enabling private vulnerability reporting [#27](https://gitlab.eclipse.org/eclipsefdn/security/otterdog/-/issues/27)
-- tag protections [#143](https://gitlab.eclipse.org/eclipsefdn/security/otterdog/-/issues/143)
-- supporting merge queue settings for a branch protection rule [#86](https://gitlab.eclipse.org/eclipsefdn/security/otterdog/-/issues/86)
+- ~~(deprecated) tag protections~~ [#143](https://github.com/eclipse-csi/otterdog/issues/143)
+- supporting merge queue settings for a branch protection rule [#86](https://github.com/eclipse-csi/otterdog/issues/86)
 - transfer a repo from one organization to another organization
 
 Most of the unsupported settings are only accessible via the Web UI of GitHub.
 In case you would like to have a specific feature of GitHub being supported by `otterdog`,
-please open a ticket [at](https://gitlab.eclipse.org/eclipsefdn/security/otterdog/-/issues/new).
+please open a ticket [at](https://github.com/eclipse-csi/otterdog/issues/new?template=Blank+issue).