[css-grid] typo

Author: tabatkins

css-grid/Overview.html

@@ -2532,7 +2532,7 @@ <h3 id=auto-margins><span class=secno>7.1. </span> Aligning with ‘<a
    href="#track-size-auto"><code class=css>auto</code></a>’ margins</h3>
 
   <p> <em>This section is non-normative. The normative definition of how
-   margins affect grid items is in the <a href="#layout-algorithm">Flex
+   margins affect grid items is in the <a href="#layout-algorithm">Grid
    Layout Algorithm</a> section.</em>
 
   <p> Auto margins on <a href="#grid-item"><i>grid items</i></a> have an

css-grid/Overview.src.html

@@ -1980,7 +1980,7 @@ <h3 id='auto-margins'>
 
 	<p>
 		<em>This section is non-normative.  
-			The normative definition of how margins affect grid items is in the <a href="#layout-algorithm">Flex Layout Algorithm</a> section.</em>
+			The normative definition of how margins affect grid items is in the <a href="#layout-algorithm">Grid Layout Algorithm</a> section.</em>
 
 	<p>
 		Auto margins on <i>grid items</i> have an effect very similar to auto margins in block flow: