Improve the ja character set per ARIB feedback

imsc1/spec/ttml-ww-profiles.html

@@ -3630,18 +3630,18 @@ <h2>Common Character Sets</h2>
           Collection 285 at [[ISO10646]]<br>
           (Japanese Non Ideographic Extension)<br>
           Collection 286 at [[ISO10646]]<br>
+          (Common Japanese)<br>
+          Collection 287 at [ISO10646]<br>
           (JIS2004 Ideographics Extension)<br>
           Collection 371 at [[ISO10646]]<br>
-          (Fullwidth ASCII variants)<br>
-          U+FF01 – U+FF5E<br>
-          (Fullwidth Symbol variants)<br>
-          U+FFE3, U+FFE5<br>
-          (Halfwidth Katakana variants)<br>
-          U+FF65 – U+FF9F<br>
-          (Halfwidth CJK punctuation)<br>
-          U+FF61 – U+FF64<br>
+          (Japanese Ideographics Supplement)<br>
+          Collection 372 at [ISO10646]<br>
           (Additional symbols and characters (Part 1))<br>
-          Table 5-2 at [[ARIB-STD-B62]]
+          Table 5-2 at [[ARIB-STD-B62]]<br>
+          (CJK Compatibility Ideographs)<br>
+          The standardized variation sequences for CJK compatibility ideographs
+          specified at [ISO10646]
+          </td>
         </tr>
       </tbody>
     </table>