[css-anchor-position-1][editorial] Fix capitalization.

Author: fantasai

css-anchor-position-1/Overview.bs

@@ -2144,11 +2144,11 @@ laying out later boxes cannot change this decision.
 		remove its [=last successful position option=]
 		if any of the following are true:
 
-		* its computed 'position' value has changed,
+		* Its computed 'position' value has changed,
 			its [=containing block=] has changed,
-			or it no longer generates a box
-		* its computed value for any [=longhand property|longhand=] of 'position-try' has changed
-		* its computed value for any [=@position-try property=] has changed
+			or it no longer generates a box.
+		* Its computed value for any [=longhand property|longhand=] of 'position-try' has changed.
+		* Its computed value for any [=@position-try property=] has changed.
 		* Any of the ''@position-try'' rules referenced by it
 			have been added, removed, or mutated.