Add option to create muliple pin spaces shortcut

Signed-off-by: Ajay Bura <ajbura@gmail.com>

src/client/action/accountData.js

@@ -1,6 +1,9 @@
 import appDispatcher from '../dispatcher';
 import cons from '../state/cons';
 
+/**
+ * @param {string | string[]} roomId - room id or array of them to add into shortcuts
+ */
 export function createSpaceShortcut(roomId) {
   appDispatcher.dispatch({
     type: cons.actions.accountData.CREATE_SPACE_SHORTCUT,