Tweak changelog wording

CHANGELOG.md

@@ -15,4 +15,4 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/) a
 
 - Run Ananke with Hugo v0.50
 - Remove default background image so users can choose to not use one at all. #133 (cdeguise)
-- Add reading time and word count to pages, conditionally if set at global, page, or section level. (thanks to @looer for starting)
+- Add reading time and word count to pages, conditionally if set at global, page, or section level with the `show_reading_time` key. (thanks to @looer for starting)