[css-backgrounds-4][editorial] Fixed reference to background-position-inline

Author: SebastianZ

css-backgrounds-4/Overview.bs

@@ -226,7 +226,7 @@ Background Positioning: the 'background-position' shorthand property</h3>
 	within their corresponding [=background positioning area=].
 
 	This property is a [=shorthand property=] that sets
-	'background-position-x', 'background-position-y', 'background-position-block', and 'background-position-inine'
+	'background-position-x', 'background-position-y', 'background-position-block', and 'background-position-inline'
 	in a single declaration.
 
 	Its value is given as a comma-separated list