[css-text-decor-3] Add U+2053 SWUNG DASH to list of Po exceptions, per Florian’s interpretation of Kobayashi-sensei’s advice.

Author: fantasai

css-text-decor-3/Overview.bs

@@ -746,6 +746,7 @@ Emphasis Mark Style: the 'text-emphasis-style' property</h3>
           <tr><td>؊	<td>U+060A	<td>ARABIC-INDIC PER TEN THOUSAND SIGN
           <tr><td>&	<td>U+0026	<td>AMPERSAND
           <tr><td>⁊	<td>U+204A	<td>TIRONIAN SIGN ET
+          <tr><td>⁓	<td>U+2053	<td>SWUNG DASH
           <tr><td>@	<td>U+0040	<td>COMMERCIAL AT
           <tr><td>§	<td>U+00A7	<td>SECTION SIGN
           <tr><td>¶	<td>U+00B6	<td>PILCROW SIGN