[css-easing-1] Clarify listed changes are non-editorial. #6477

Since there were other changes, but they were all minor editorial tweaks.

Author: fantasai

css-easing-1/Overview.bs

@@ -462,7 +462,7 @@ to ensure they do not introduce new security considerations.
 Changes {#changes}
 =======
 
-The following changes have been made since the
+The following non-editorial changes have been made since the
 <a href="https://www.w3.org/TR/2019/CR-css-easing-1-20190430/">30 April 2019 Candidate Recommendation</a>:
 
 *   Updated ''cubic-bezier()'' syntax definition to annotate range restrictions