Run prettier on all *.md files

``` prettier '{app,source}/**/**.md' --write ```
2020-03-08 17:52:59 +00:00 · 2020-03-08 17:52:59 +00:00 · 85a10c545b
commit 85a10c545b
parent a3ceeaf0f3
170 changed files with 5127 additions and 2282 deletions
--- a/source/_posts/display-custom-menu-drupal-7-theme-template-file.md
+++ b/source/_posts/display-custom-menu-drupal-7-theme-template-file.md
@ -9,7 +9,9 @@ tags:
  - php
  - aria
 ---
-For reference, this is the code needed to display a menu in a Drupal 7 template file, including the navigation ARIA role.
+
+For reference, this is the code needed to display a menu in a Drupal 7 template
+file, including the navigation ARIA role.

 ```language-php
 $menu_name = 'menu-footer-menu';