reverts heading

files/en-us/mdn/writing_guidelines/page_structures/page_types/index.md

@@ -45,7 +45,7 @@ If the work is more significant, then you should consider a few factors when pri
 
 If you want to get a team together to work on an update, or you just want to report or discuss some content needing an update, feel free to [file a content issue](https://github.com/mdn/content/issues) or [ask us for help](/en-US/docs/MDN/Community/Communication_channels).
 
-## Front matter key for page types
+## The page-type front matter key
 
 We have defined a front matter key `page-type` to clearly identify the type of MDN pages. The templates linked below indicate which `page-type` values you should set for each page type.