[css-anchor-position-1] Center track alignment is center. #11803

Author: fantasai

css-anchor-position-1/Overview.bs

@@ -760,11 +760,12 @@ which will be used if the [=self-alignment property=] on the box
 is ''align-self/normal'':
 
 * If the only the center track in an axis is selected,
-	or all three tracks are selected,
+	the default alignment in that axis is ''align-self/center''.
+* If all three tracks are selected,
 	the default alignment in that axis is ''align-self/anchor-center''.
 * Otherwise, the default alignment in that axis
 	is toward the non-specified side track:
-	if it's specifying the "start" track of its axis,
+	if it's specifying the “start” track of its axis,
 	the default alignment in that axis is ''align-self/end''; etc.
 
 <div class=example>