[css-flexbox] Update DoC

Author: fantasai

css-flexbox/issues-cr-2012.html

@@ -200,6 +200,13 @@ <h1>CSS Flexible Box Layout Level 3 Disposition of Comments for 2012-09-18 CR</h
 Issue 20.
 Summary:  Min/max constraint sizing of flexible flex-basis: 0.
 From:     Tab Aktins
-Comment:  http://lists.w3.org/Archives/Public/www-style/2013May/0342.html
+Comment:  <a href="http://lists.w3.org/Archives/Public/www-style/2013May/0342.html">http://lists.w3.org/Archives/Public/www-style/2013May/0342.html</a>
 Open
-</opre>
+</pre>
+<pre class="open" id="issue-21">
+Issue 21.
+Summary:  Clarify interaction of table fixup and flex itemizing
+From:     Christian Biesinger
+Comment:  <a href="http://lists.w3.org/Archives/Public/www-style/2013May/0508.html">http://lists.w3.org/Archives/Public/www-style/2013May/0508.html</a>
+Open
+</pre>

css-flexbox/issues-cr-2012.txt

@@ -151,3 +151,9 @@ From:     Tab Aktins
 Comment:  http://lists.w3.org/Archives/Public/www-style/2013May/0342.html
 Open
 ----
+Issue 21.
+Summary:  Clarify interaction of table fixup and flex itemizing
+From:     Christian Biesinger
+Comment:  http://lists.w3.org/Archives/Public/www-style/2013May/0508.html
+Open
+----