[css-grid] Fix example.

Author: tabatkins

css-grid/Overview.bs

@@ -2165,7 +2165,9 @@ Line-based Placement: the 'grid-row-start', 'grid-column-start', 'grid-row-end',
 			/* Line 6 to line 9 */
 
 			grid-column-start: span C; grid-column-end: span C;
-			/* Error: both properties compute to <a value for="<grid-line>">auto</a> */
+			/* Error: The end span is ignored, and an auto-placed
+			   item can't span to a named line.
+			   Equivalent to ''grid-column: span 1;''. */
 
 			grid-column-start: 5; grid-column-end: C -1;
 			/* Line 5 to line 9 */

css-grid/Overview.html

@@ -89,7 +89,7 @@
 </p>
   <h1 class="p-name no-ref" id=title>CSS Grid Layout Module Level 1</h1>
   <h2 class="no-num no-toc no-ref heading settled heading" id=subtitle><span class=content>Editor’s Draft,
-    <span class=dt-updated><span class=value-title title=20140305>5 March 2014</span></span></span></h2>
+    <span class=dt-updated><span class=value-title title=20140307>7 March 2014</span></span></span></h2>
   <div data-fill-with=spec-metadata><dl><dt>This version:<dd><a class=u-url href=http://dev.w3.org/csswg/css-grid/>http://dev.w3.org/csswg/css-grid/</a><dt>Latest version:<dd><a href=http://www.w3.org/TR/css-grid-1/>http://www.w3.org/TR/css-grid-1/</a><dt>Editor’s Draft:<dd><a href=http://dev.w3.org/csswg/css-grid/>http://dev.w3.org/csswg/css-grid/</a><dt>Previous Versions:<dd><a href=http://www.w3.org/TR/2013/WD-css3-grid-layout-20130402/ rel=previous>http://www.w3.org/TR/2013/WD-css3-grid-layout-20130402/</a><dd><a href=http://www.w3.org/TR/2012/WD-css3-grid-layout-20121106/ rel=previous>http://www.w3.org/TR/2012/WD-css3-grid-layout-20121106/</a>
     <dt>Feedback:</dt>
         <dd><a href="mailto:www-style@w3.org?subject=%5Bcss-grid%5D%20feedback">www-style@w3.org</a>
@@ -2166,7 +2166,9 @@ <h3 class="heading settled heading" data-level=8.2 id=line-placement><span class
   /* Line 6 to line 9 */
 
   grid-column-start: span C; grid-column-end: span C;
-  /* Error: both properties compute to <a class=css-code data-link-for="<grid-line>" data-link-type=value href=#grid-placement-auto title=auto>auto</a> */
+  /* Error: The end span is ignored, and an auto-placed
+     item can’t span to a named line.
+     Equivalent to <a class=css data-link-type=propdesc href=#propdef-grid-column title=grid-column>grid-column: span 1;</a>. */
 
   grid-column-start: 5; grid-column-end: C -1;
   /* Line 5 to line 9 */