[css-grid] Silence a bikeshed warning.

Author: tabatkins

css-grid/Overview.html

@@ -1614,7 +1614,7 @@ <h3 data-level=6.3 id=grid-auto-position-property><span class=secno>6.3 </span><
 
 <p>	Interpret the two <a class=production data-link-type=type href=#typedef-grid-line>&lt;grid-line&gt;</a>s as if they were specified in <a class=property data-link-type=propdesc href=#propdef-grid-column-start title=grid-column-start>grid-column-start</a> and <a class=property data-link-type=propdesc href=#propdef-grid-row-start title=grid-row-start>grid-row-start</a>, respectively,
 	of a hypothetical <a href=#grid-item>grid item</a>,
-	treating <a class=css data-link-type=maybe href=#valuedef-auto>auto</a> as <span class=css data-link-type=maybe>1</span> for this purpose.
+	treating <a data-link-for=grid-row-start data-link-type=value>auto</a> as <span class=css data-link-type=maybe>1</span> for this purpose.
 	The resulting lines of the <a href=#grid-container>grid container</a>
 	become a <a href=#definite0>definite grid position</a> in both axises
 	for the auto-placed <a href=#grid-item>grid items</a>.

css-grid/Overview.src.html

@@ -1615,7 +1615,7 @@ <h3 id="grid-auto-position-property">
 
 	Interpret the two <<grid-line>>s as if they were specified in 'grid-column-start' and 'grid-row-start', respectively,
 	of a hypothetical <a>grid item</a>,
-	treating ''auto'' as ''1'' for this purpose.
+	treating <a value for=grid-row-start>auto</a> as ''1'' for this purpose.
 	The resulting lines of the <a>grid container</a>
 	become a <a>definite grid position</a> in both axises
 	for the auto-placed <a>grid items</a>.