fixed typo

api_connector.js

      * Maps the supported events and their status
      * (true it the event is enabled and false if it is disabled)
      * @type {{
-     *              incommingMessage: boolean,
+     *              incomingMessage: boolean,
      *              outgoingMessage: boolean,
      *              displayNameChange: boolean,
      *              participantJoined: boolean,
      */
     var events =
     {
-        incommingMessage: false,
+        incomingMessage: false,
         outgoingMessage:false,
         displayNameChange: false,
         participantJoined: false,

doc/api.md

 
 Currently we support the following events:
 
-* **incommingMessage** - event notifications about incomming
+* **incomingMessage** - event notifications about incoming
 messages. The listener will receive object with the following structure:
 ```
 {
 have keys with the names of the events and values the listeners of the events.
 
 ```
-function incommingMessageListener(object)
+function incomingMessageListener(object)
 {
 ...
 }
 }
 
 api.addEventListeners({
-    incommingMessage: incommingMessageListener,
+    incomingMessage: incomingMessageListener,
     outgoingMessage: outgoingMessageListener})
 ```
 
 If you want to remove a listener you can use ```removeEventListener``` method with argument the name of the event.
 ```
-api.removeEventListener("incommingMessage");
+api.removeEventListener("incomingMessage");
 ```
 
 If you want to remove more than one event you can use ```removeEventListeners``` method with argument
  array with the names of the events.
 ```
-api.removeEventListeners(["incommingMessage", "outgoingMessageListener"]);
+api.removeEventListeners(["incomingMessage", "outgoingMessageListener"]);
 ```
 
 You can remove the embedded Jitsi Meet Conference with the following code:

external_api.js

      * event and value - the listener.
      * Currently we support the following
      * events:
-     * incommingMessage - receives event notifications about incomming
+     * incomingMessage - receives event notifications about incoming
      * messages. The listener will receive object with the following structure:
      * {{
      *  "from": from,//JID of the user that sent the message
     /**
      * Adds event listeners to Meet Jitsi. Currently we support the following
      * events:
-     * incommingMessage - receives event notifications about incomming
+     * incomingMessage - receives event notifications about incoming
      * messages. The listener will receive object with the following structure:
      * {{
      *  "from": from,//JID of the user that sent the message

muc.js

         if (txt) {
             console.log('chat', nick, txt);
             Chat.updateChatConversation(from, nick, txt);
-            if(APIConnector.isEnabled() && APIConnector.isEventEnabled("incommingMessage"))
+            if(APIConnector.isEnabled() && APIConnector.isEventEnabled("incomingMessage"))
             {
                 if(from != this.myroomjid)
-                    APIConnector.triggerEvent("incommingMessage",
+                    APIConnector.triggerEvent("incomingMessage",
                         {"from": from, "nick": nick, "message": txt});
             }
         }