[css-text-3] Update test coverage info

Author: frivoal

css-text-3/Overview.bs

@@ -374,9 +374,7 @@ Characters and Letters</h3>
     and must not affect the content of a plain text copy &amp; paste operation.
 
     <wpt>
-    <!-- manual test
       text-transform/text-transform-copy-paste-001-manual.html
-    -->
     </wpt>
 
     <p>Values have the following meanings:

css-text-3/test-coverage.html

@@ -365,7 +365,7 @@ <h3 id="shaping-across-intra-word-breaks"><a href="https://drafts.csswg.org/css-
 <p>Missing tests:
 
 <ul>
-	<li>Only word-break:break-all is covered, all other missing.
+	<li>Only word-break:break-all is covered, all other missing. (<a href="https://github.com/web-platform-tests/wpt/pull/14669">pending PR</a>)
 </ul>
 
 <h2 id="alignment-and-justification"><a href="https://drafts.csswg.org/css-text-3/#justification">Alignment and Justification</a></h2>