Fix a bunch of other low-hanging style lints (#36498)

- **Fix a bunch of low hanging style lints like unnecessary-return**
- **Fix single worktree violation**
- **And the rest**

Release Notes:

- N/A

crates/docs_preprocessor/src/main.rs

@@ -295,7 +295,7 @@ fn dump_all_gpui_actions() -> Vec<ActionDef> {
 
     actions.sort_by_key(|a| a.name);
 
-    return actions;
+    actions
 }
 
 fn handle_postprocessing() -> Result<()> {