uncomment version dropdown styles (#863)

Author: sserrata

packages/docusaurus-theme-openapi-docs/src/theme/styles.scss

@@ -130,22 +130,22 @@
 
 /* Version button */
 
-// .version-button div {
-//   display: block;
-// }
+.version-button div {
+  display: block;
+}
 
-// .version-button div > button > span::after {
-//   border-color: currentcolor transparent;
-//   border-style: solid;
-//   border-width: 0.4em 0.4em 0;
-//   content: "";
-//   margin-left: 0.3em;
-//   position: relative;
-//   transform: translateY(-50%);
-//   display: inline-block;
-//   font-size: 0.8rem;
-//   top: 1px;
-// }
+.version-button div > button > span::after {
+  border-color: currentcolor transparent;
+  border-style: solid;
+  border-width: 0.4em 0.4em 0;
+  content: "";
+  margin-left: 0.3em;
+  position: relative;
+  transform: translateY(-50%);
+  display: inline-block;
+  font-size: 0.8rem;
+  top: 1px;
+}
 
 .openapi__logo {
   width: 250px;