fix missing closing <p> tag in ToS in en.yml (#4262)

config/locales/en.yml

@@ -494,7 +494,7 @@ en:
 
       <p>This document is CC-BY-SA. It was last updated May 31, 2013.</p>
 
-      <p>Originally adapted from the <a href="https://github.com/discourse/discourse">Discourse privacy policy</a>.
+      <p>Originally adapted from the <a href="https://github.com/discourse/discourse">Discourse privacy policy</a>.</p>
     title: "%{instance} Terms of Service and Privacy Policy"
   time:
     formats: