[css-align-3] Markup fix

Author: fantasai

css-align-3/Overview.bs

@@ -2453,7 +2453,7 @@ Changes</h2>
 		(<a href="https://github.com/w3c/csswg-drafts/issues/3611">Issue 3611</a>)
 		<li>Clarify that a box with no [=baseline set=] synthesizes its [=alignment baseline=] as needed.
 		(<a href="https://github.com/w3c/csswg-drafts/issues/3611">Issue 3611</a>)
-		<li>Clarified that only non-replaced boxes are affected by [=content-alignment].
+		<li>Clarified that only non-replaced boxes are affected by [=content-alignment=].
 		(<a href="https://github.com/w3c/csswg-drafts/issues/4545">Issue 4545</a>)
 		<li>Clarified when a box has a [=coordinated self-alignment preference=]
 		that enables [=baseline content-alignment=],