Add ACTIONS_RUNTIME_TOKEN to build job and fix README punctuation

Author: epidemicz

.github/workflows/main.yml

@@ -8,6 +8,8 @@ on:
 jobs:
   build-and-pack:
     runs-on: windows-latest
+    env:
+      ACTIONS_RUNTIME_TOKEN: ${{ secrets.ACTIONS_RUNTIME_TOKEN }}
     steps:
       - name: Checkout code
         uses: actions/checkout@v4

README.md

@@ -3,7 +3,7 @@
 # <img src="source/icon.png" width=32> Free Game Notifications Plugin
 This plugin periodically checks the Epic Games Store for free games and gives you a notification when there's a free game to claim that you don't already own.  
 
-Clicking the notification brings you to the game page so you can claim it
+Clicking the notification brings you to the game page so you can claim it.
 
 ## Todo
 Eventually I would like to support checking other game stores