update CHANGELOG to reflect age.yml becoming commonsense.yml (#469)

Co-authored-by: YozoraXCII <admin@yzra.dev>

PMM/CHANGELOG

@@ -3,7 +3,7 @@ Added Common Sense Selection [Movie](https://www.commonsensemedia.org/reviews/ca
 Added several [visual styles for Separators](https://github.com/meisnate12/Plex-Meta-Manager-Images/tree/master/separators) to match PLEX's Categories theming. Called using `sep_style` template variable
 
 # OVERLAY CHANGES
-Added [Common Sense Age Rating](https://www.commonsensemedia.org/) overlays, called with `- git: PMM/overlays/age` and to be used in combination with operation `mass_content_rating_update: mdb_commonsense`
+Added [Common Sense Age Rating](https://www.commonsensemedia.org/) overlays, called with `- git: PMM/overlays/commonsense` and to be used in combination with operation `mass_content_rating_update: mdb_commonsense`
 - See [this image](https://media.discordapp.net/attachments/1018513616653262908/1020094756329623624/unknown.png)
 Added Common Sense Selection overlays, called with `- git: PMM/overlays/commonsense_selection`
 - See [this image](https://i.ibb.co/2cyjM1c/Untitled.png)