Remove todo! comments (#8981)

Switching fully to normal `todo` style

Release Notes:

- N/A

crates/collab/src/main.rs

@@ -132,7 +132,7 @@ async fn main() -> Result<()> {
                 .await
                 .map_err(|e| anyhow!(e))?;
 
-            // todo("windows")
+            // todo(windows)
             #[cfg(windows)]
             unimplemented!();
         }