[css3-layout] Added missing quote.

Author: bert-github

css-template/Overview.src.html

@@ -2315,7 +2315,7 @@ <h3>Stacking elements on top of a grid: 'grid-area' and 'grid-auto'</h3>
 possible) such that is doesn't overlap with any earlier elements in
 the document that have the same <em>grid ancestor</em> and 'grid-area'
 other then ''none''. More precisely: the element is placed as for
-'grid-area: <var>x</var> <var>y</var> <var>W</var> <var>H</var>, where
+'grid-area: <var>x</var> <var>y</var> <var>W</var> <var>H</var>', where
 <var>x</var> and <var>y</var> are chosen as follows: <span
 class=issue>Define. Tight packing (i.e., closest to top left corner)
 or preserve element order (i.e., to the right or below of previous
@@ -2334,7 +2334,7 @@ <h3>Stacking elements on top of a grid: 'grid-area' and 'grid-auto'</h3>
 that is doesn't overlap with any earlier elements in the document that
 have the same <em>grid ancestor</em> and 'grid-area' other then
 ''none''. More precisely: the element is placed as for 'grid-area:
-<var>x</var> <var>y</var> <var>W</var> <var>H</var>, where
+<var>x</var> <var>y</var> <var>W</var> <var>H</var>', where
 <var>x</var> and <var>y</var> are chosen as follows: <span
 class=issue>define</span>
 </dl>