fix(multiOrg/dropdown): margins on the horizontal divider (#5601)

Author: ChitlangeSahas

src/identity/components/GlobalHeader/GlobalHeaderDropdown/GlobalHeaderDropdown.scss

@@ -47,7 +47,7 @@
 }
 
 .line-break {
-  margin: 8px;
+  margin: 6px 0;
   background-color: rgba(241, 241, 243, 0.1);
 }