[css-text-decor-4] Fix typo w3c#4528

Author: fantasai

css-text-decor-4/Overview.bs

@@ -1259,7 +1259,7 @@ Emphasis Mark Style: the 'text-emphasis-style' property</h3>
 				<tr><td>¶	<td>U+00B6	<td>PILCROW SIGN
 				<tr><td>⁋	<td>U+204B	<td>REVERSED PILCROW SIGN
 				<tr><td>⁓	<td>U+2053	<td>SWUNG DASH
-				<tr><td>〽️	<td>U+303D	<td>PART ALTERNATION MARK
+				<tr><td>〽	<td>U+303D	<td>PART ALTERNATION MARK
 			</table>
 
 		<li>Characters belonging to the Unicode classes for control codes