[css-text] Make bikeshed happy

Part of #9511

Author: frivoal

css-text-4/Overview.bs

@@ -10606,7 +10606,7 @@ CJK Punctuation Spacing: the 'text-spacing-trim' property</h3>
 				<th>''trim-all''
 				<td colspan=4>yes
 			<tr>
-				<th>''auto''
+				<th>''text-spacing-trim/auto''
 				<td colspan=4>user-agent specific / platform dependent
 		</table>
 	</div>