Remove ! from todo!() in comments (#8643)

This practice makes it difficult to locate todo!s in my code when I'm
working. Let's take out the bang if we want to keep doing this.

Release Notes:

- N/A

crates/languages/src/purescript.rs

@@ -26,7 +26,7 @@ pub struct PurescriptLspAdapter {
 }
 
 impl PurescriptLspAdapter {
-    // todo!(linux): remove
+    // todo(linux): remove
     #[cfg_attr(target_os = "linux", allow(dead_code))]
     pub fn new(node: Arc<dyn NodeRuntime>) -> Self {
         Self { node }