[css-text-3] Clarify confusing sentence

Author: frivoal

css-text-3/Overview.bs

@@ -1021,7 +1021,10 @@ Characters and Letters</h3>
     </li>
     <li><p>If 'white-space' is set to ''pre'', ''pre-wrap'', or ''break-spaces''
       any sequence of spaces is treated as a sequence of non-breaking spaces.
-      However, a <a>soft wrap opportunity</a> exists at the end of the sequence.
+      However, a <a>soft wrap opportunity</a> exists at the end of the sequence
+      in the case of ''pre-wrap'' and ''break-spaces'',
+      as well as between every space of the sequence
+      in the case of ''break-spaces''.
 
       <wpt>
         overflow-wrap/overflow-wrap-break-word-004.html

css-text-3/test-coverage.html

@@ -163,14 +163,6 @@ <h4 id="phase-i-collapsing-and-transformation"><a href="https://drafts.csswg.org
 
 <p>Sufficient coverage. All parts of this section are well exercised.
 
-<div class=issue>Issue
-	<p>Spec problem:
-
-	<ul>
-		<li>“If white-space is set to pre, pre-wrap, or break-spaces any sequence of spaces is treated as a sequence of non-breaking spaces. However, a soft wrap opportunity exists at the end of the sequence.” =&gt; Second sentence weird. That’t not true for “pre”, and only partially true for “break-spaces”.
-	</ul>
-</div>
-
 <h4 id="segment-break-transformation-rules"><a href="https://drafts.csswg.org/css-text-3/#line-break-transform">Segment Break Transformation Rules</a></h4>
 
 <p>Partial coverage.