[css-flexbox] More DoC update

Author: fantasai

css-flexbox/issues-cr-2012.html

@@ -191,6 +191,7 @@ <h1>CSS Flexible Box Layout Level 1 Disposition of Comments for 2012-09-18 CR</h
 Summary:  Re-revert min-size of flex items back to 'auto', with overflow consideration
 From:     Elliot Sprehn
 Comment:  <a href="http://lists.w3.org/Archives/Public/www-style/2013Apr/0538.html">http://lists.w3.org/Archives/Public/www-style/2013Apr/0538.html</a>
+Analysis: <a href="http://lists.w3.org/Archives/Public/www-style/2013Jul/0456.html">http://lists.w3.org/Archives/Public/www-style/2013Jul/0456.html</a>
 Open
 </pre>
 <pre class='open' id='issue-20'>

css-flexbox/issues-cr-2012.txt

@@ -146,6 +146,7 @@ Issue 19.
 Summary:  Re-revert min-size of flex items back to 'auto', with overflow consideration
 From:     Elliot Sprehn
 Comment:  http://lists.w3.org/Archives/Public/www-style/2013Apr/0538.html
+Analysis: http://lists.w3.org/Archives/Public/www-style/2013Jul/0456.html
 Open
 ----
 Issue 20.