Fix: Remove trailing whitespace identified by CI

Author: ananya1971

docs/user/advertising/ad-blocking.rst

@@ -81,4 +81,5 @@ here is the data we have on ad blocking at Read the Docs.
   due to an ad blocker, privacy plugin, disabling JavaScript, or another reason.
 * Of users who do not block GA,
   about 6% opt out of analytics on Read the Docs by enabling
-Do Not Track
+
+Do Not Track.

docs/user/legal/security-policy.rst

@@ -85,5 +85,5 @@ Account security
   and Read the Docs employees may only view them
   with your explicit permission in response to your support requests,
   or when required for security purposes.
-  
- * You can read more about account privacy.
+
+* You can read more about account privacy.