more more styling to the CSS

Doc/html/style.css

@@ -141,7 +141,8 @@ div.note .label         { margin-right: 0.5em;
                           border: thin solid black;
                           padding: 0pt 1em 4pt 1em; }
 
-.seealso .heading       { font-size: 110%; }
+.seealso > .heading     { font-size: 110%;
+                          font-weight: bold; }
 
 /*
  * Class 'availability' is used for module availability statements at

Doc/perl/python.perl

@@ -1871,7 +1871,7 @@ sub process_python_state(){
 
 sub do_env_seealso{
     return ("<div class=\"seealso\">\n  "
-            . "<p class=\"heading\"><b>See Also:</b></p>\n"
+            . "<p class=\"heading\">See Also:</p>\n"
             . $_[0]
             . '</div>');
 }