📚💄 Update rdoc attribute heading styles

This styles attr accessor headings more similarly to method headers.

Additionally, since a background color has been applied, the link
underlines seemed to be too much.  So this disables attr/method header
link underlines too.

docs/styles.css

@@ -10,18 +10,28 @@ main .method-detail {
   justify-content: space-between;
 }
 
-main .method-header, main .method-controls {
+main .method-header,
+main .method-controls,
+.attribute-method-heading {
   padding: 0.5em;
   /* border: 1px solid var(--highlight-color); */
   background: var(--table-header-background-color);
   line-height: 1.6;
 }
 
+.attribute-method-heading .attribute-access-type {
+  float: right;
+}
+
 main .method-header {
   border-right: none;
   border-radius: 4px 0 0 4px;
 }
 
+main .method-heading :any-link {
+  text-decoration: none;
+}
+
 main .method-controls {
   border-left: none;
   border-radius: 0 4px 4px 0;