[css-grid-2] Spell check.

Author: dbaron

css-grid-2/Overview.bs

@@ -127,7 +127,7 @@ Establishing a Subgrid</h3>
 	</dl>
 
 	Unlike those of a regular nested grid,
-	a subgrid’s contents participate in its parent <a>grid formatting contex</a>;
+	a subgrid’s contents participate in its parent <a>grid formatting context</a>;
 	thus a subgrid does not establish an <a>independent formatting context</a>.
 
 	The syntax of <<line-name-list>> is defined as follows:
@@ -606,7 +606,7 @@ Subgrid Sizing Algorithm</h3>
 		it treats <var>B</var>'s items
 		as slotted into to <var>A</var>'s corresponding columns,
 		but when <var>A</var> sizes its rows
-		it treates <var>B</var> as a single item
+		it treats <var>B</var> as a single item
 		(a grid container with its own rows and some items including items <var>C</var> and <var>D</var>).
 		Similarly when <var>B</var> sizes its rows,
 		it treats <var>C</var>'s items as slotted into <var>B</var>'s rows,
@@ -735,7 +735,7 @@ Aspect-ratio&ndash;controlled Gutters</h2>
 			If both 'align-content' and 'justify-content' have <<number>> values,
 			then 'justify-content'’s <<number>> value is ignored
 			and its <<content-distribution>> value honored as if specified alone.
-			fIf no <<content-distribution>> value was specified,
+			If no <<content-distribution>> value was specified,
 			then 'justify-content' takes 'align-content'’s <<content-distribution>> value
 			(if one was specified)
 			and otherwise falls back to ''space-between''.