[css-grid-3][editorial] typo

Author: tabatkins

css-grid-3/Overview.bs

@@ -717,7 +717,7 @@ repeat(auto-areas)</h3>
 repeat(auto-fit)</h3>
 
 	In [=masonry containers=] (as in regular [=grid containers=])
-	''repeat()/auto-fit()'' acts like ''repeat()/auto-fill'',
+	''repeat()/auto-fit'' acts like ''repeat()/auto-fill'',
 	but with empty tracks [=collapsed tracks|collapsed=].
 	However, because placement occurs after track sizing,
 	[=masonry containers=] use a heuristic