Improved the Features index page using Vale.

Author: AnnaTomanek

.vale.ini

@@ -12,6 +12,8 @@ BasedOnStyles = CKEditor, Vale, Microsoft, proselint, write-good, Readability
 Microsoft.Avoid = NO
 Microsoft.Contractions = NO
 Microsoft.Dashes = NO
+# The rule to use "address" instead of URL makes no sense for our audience.
+Microsoft.GeneralURL = NO
 # Replaced by a custom CKEditor style to make exceptions possible.
 Microsoft.HeadingAcronyms = NO
 # The Passive rule appears in write-good too, with a better description.