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

script/licenses/template.hbs.md

@@ -8,14 +8,14 @@
 {{#each licenses}}
 
 #### {{name}}
-  
+
 ##### Used by:
 
 {{#each used_by}}
 * [{{crate.name}} {{crate.version}}]({{#if crate.repository}} {{crate.repository}} {{else}} https://crates.io/crates/{{crate.name}} {{/if}})
 {{/each}}
- 
+
 {{text}}
 
 --------------------------------------------------------------------------------
-{{/each}}
+{{/each}}