Your edit was not restored, it was rejected by the question owner. After a suggested edit is approved, it can still be rejected by the owner or a moderator, which then ends the review for good. A rollback to a previous edit does not then accept the suggested edit again, it simply restores a post's previous state.
You can use the syntax [tag:tag-name] to create a tag that links to the main site. For example, [tag:starcraft-2] will result in starcraft-2
If you need to link to a tag on the meta site, use [meta-tag:tag-name], e.g. [meta-tag:game-identification] -> game-identification