Rollup merge of rust-lang#140063 - Kobzol:ci-report-fix-newline, r=jieyouxu

Remove stray newline from post-merge report

[Oops](rust-lang#140043 (comment)) :)

r? jieyouxu

Author: ChrisDenton

src/ci/citool/src/main.rs

@@ -191,7 +191,7 @@ fn post_merge_report(db: JobDatabase, current: String, parent: String) -> anyhow
 
     output_details("Test dashboard", || {
         println!(
-            r#"\nRun
+            r#"Run
 
 ```bash
 cargo run --manifest-path src/ci/citool/Cargo.toml -- \