[css-text-4] Typo fix

Author: xfq

css-text-4/Overview.bs

@@ -13112,7 +13112,7 @@ Changes</h2>
 	* Restored accidentally deleted “and each line after a [=forced line break=]”
 		from definition of ''text-spacing-trim: space-first''.
 		(<a href="https://github.com/w3c/csswg-drafts/issues/9532">Issue 9532</a>)
-	* Make ''text-spacing-trim/normal'' the initia value of 'text-spacing-trim'.
+	* Make ''text-spacing-trim/normal'' the initial value of 'text-spacing-trim'.
 		(<a href="https://github.com/w3c/csswg-drafts/issues/9511">Issue 9511</a>)
 	* Change the end-of-line behavior of ''text-spacing-trim/space-first''.
 		(<a href="https://github.com/w3c/csswg-drafts/issues/9736">Issue 9736</a>)