[css-align] weird typo

Author: tabatkins

css-align/Overview.bs

@@ -400,7 +400,7 @@ Overflow Alignment: the ''safe'' and ''unsafe'' keywords</h3>
 	If the <a>overflow alignment</a> isn't explicitly specified,
 	the default <a>overflow alignment</a> is ''unsafe''.
 
-	<pre class='prod'><dfn>&lt;overflow-position></dfn> = &lt; | safe</pre>
+	<pre class='prod'><dfn>&lt;overflow-position></dfn> = unsafe | safe</pre>
 
 	<dl dfn-type="value" dfn-for="<overflow-position>">
 		<dt><dfn>safe</dfn>