style: remove trailing whitespace (#12303)

plugins/fastfile/README.md

@@ -71,13 +71,13 @@ them, add `<variable>=<value>` to your zshrc file, before Oh My Zsh is sourced.
 For example: `fastfile_var_prefix='@'`.
 
 - `fastfile_var_prefix`: prefix for the global aliases created. Controls the prefix of the
-  created global aliases.  
+  created global aliases.
   **Default:** `§` (section sign), easy to type in a german keyboard via the combination
   [`⇧ Shift`+`3`](https://en.wikipedia.org/wiki/German_keyboard_layout#/media/File:KB_Germany.svg),
   or using `⌥ Option`+`6` in macOS.
 
 - `fastfile_dir`: directory where the fastfile shortcuts are stored. Needs to end
-  with a trailing slash.  
+  with a trailing slash.
   **Default:** `$HOME/.fastfile/`.
 
 ## Author