Clean up whitespace (#10755)

I saved the `file_types.json` file and got a diff because it had some
trailing whitespace. I ran
[`lineman`](https://github.com/JosephTLyons/lineman) on the codebase.
I've done this before, but this time, I've added in the following
settings to our `.zed` local settings, to make sure every future save
respects our desire to have consistent whitespace formatting.

```json
"remove_trailing_whitespace_on_save": true,
"ensure_final_newline_on_save": true
```

Release Notes:

- N/A

extensions/toml/languages/toml/outline.scm

@@ -12,4 +12,4 @@
 
 (pair
   .
-  (_) @name) @item
+  (_) @name) @item

extensions/toml/languages/toml/redactions.scm

@@ -1 +1 @@
-(pair (bare_key) "=" (_) @redact)
+(pair (bare_key) "=" (_) @redact)