[css-grid] Avoid being too specific about growth limits.

Author: tabatkins

css-grid/Overview.bs

@@ -2804,7 +2804,7 @@ Resolve Content-Based Track Sizing Functions</h3>
 					<strong>Update the tracks' affected sizes</strong>
 					by folding in the calculated increase
 					so that the next round of space distribution will account for the increase.
-					(If the <i>growth limit</i> is infinite,
+					(If the affected size is infinite,
 					set it to the track's <i>base size</i> plus the calculated increase.)
 			</ol>
 	</ol>

css-grid/Overview.html

@@ -2856,7 +2856,7 @@ <h3 class="heading settled heading" data-level=10.4 id=algo-content><span class=
 					<strong>Update the tracks' affected sizes</strong>
 					by folding in the calculated increase
 					so that the next round of space distribution will account for the increase.
-					(If the <a data-link-type=dfn href=#growth-limit title="growth limit">growth limit</a> is infinite,
+					(If the affected size is infinite,
 					set it to the track’s <a data-link-type=dfn href=#base-size title="base size">base size</a> plus the calculated increase.)
 			</ol>
 	</ol>