[css-text-3] Fix references to text-align that assumed it was a longhand. #2577 (comment)

Author: fantasai

css-text-3/Overview.bs

@@ -1614,7 +1614,8 @@ Expanding and Compressing Text</h4>
   or otherwise disable features required to correctly shape complex scripts.
 
   <p>If a <a>justification opportunity</a> exists within a line,
-     and 'text-align' specifies full justification for that line,
+     and <a href="#text-align-property">text alignment</a> specifies
+     full justification (''text-align/justify'') for that line,
      it must be justified.
 
 <h4 id="justify-symbols">
@@ -2277,7 +2278,7 @@ Bidirectionality and Line Boxes</h3>
 
   <p class="note">Note that the inline base direction determined here
     applies to the line box itself, and not to its contents.
-    It affects 'text-align', 'text-align-last', 'text-indent', and 'hanging-punctuation',
+    It affects 'text-align-all', 'text-align-last', 'text-indent', and 'hanging-punctuation',
     i.e. the position and alignment of its contents with respect to its edges.
     It does not affect the formatting or ordering of its content.