(v0.9.0.9026) update documentation

pkgdown/extra.css

@@ -191,6 +191,9 @@ thead ~ tbody {
   /* only when it has a header */
   border-bottom: 2px solid black;
 }
+th {
+  text-align: inherit; 
+}
 table a:not(.btn), .table a:not(.btn) {
   text-decoration: inherit;
 }