Clarify range-diff comment regarding PR authors

Author: Urgau

src/handlers/check_commits/force_push_range_diff.rs

@@ -67,7 +67,9 @@ pub(super) async fn handle_event(
     let (newbase, newhead) = (&compare_after.merge_base_commit.sha, after);
 
     let message = format!(
-        r#"This PR was rebased onto a different {branch} commit! Check out the changes with our [range-diff]({protocol}://{host}/gh-range-diff/{org}/{repo}/{oldbase}..{oldhead}/{newbase}..{newhead})."#
+        r#"This PR was rebased onto a different {branch} commit. Here's a [range-diff]({protocol}://{host}/gh-range-diff/{org}/{repo}/{oldbase}..{oldhead}/{newbase}..{newhead}) highlighting what actually changed.
+
+*Rebasing is a normal part of keeping PRs up to date, so no action is needed—this note is just to help reviewers.*"#
     );
 
     // Rebase detected, post a comment linking to our range-diff.