[css-text-4] Fix typo

Author: frivoal

css-text-4/Overview.bs

@@ -5589,7 +5589,7 @@ Selecting How to Wrap: the 'text-wrap-style' property</h3>
 			Groups of lines separated by a [=forced line break=]
 			are processed separately.
 			If the element is affected by 'line-clamp',
-			the claming effect is applied first,
+			the clamping effect is applied first,
 			then the remaining lines are balanced.
 
 			<wpt>