Fix typo in icon menu

src/definitions/collections/menu.less

@@ -1090,11 +1090,9 @@ Floated Menu / Item
 }
 
 /* Icon */
-.ui.vertical.icon.menu .item > .icon:not(.dropdown) {
-  display: block;
+.ui.icon.menu .item > .icon:not(.dropdown) {
+  margin: 0;
   opacity: 1;
-  margin: 0em auto;
-  float: none;
 }
 
 /* Icon Gylph */
@@ -1108,6 +1106,14 @@ Floated Menu / Item
   margin: 0em auto;
 }
 
+/* Vertical Icon */
+.ui.vertical.icon.menu .item > .icon:not(.dropdown) {
+  display: block;
+  opacity: 1;
+  margin: 0em auto;
+  float: none;
+}
+
 /* Inverted */
 .ui.inverted.icon.menu .item {
   color: @iconMenuInvertedItemColor;