docs: Fixes spelling.

JitsiConference.js

 };
 
 /**
- * Returns true if the recording is supproted and false if not.
+ * Returns true if recording is supported and false if not.
  */
 JitsiConference.prototype.isRecordingSupported = function () {
     if(this.room)
 
 /**
  * Returns current start muted policy
- * @returns {Object} with 2 proprties - audio and video.
+ * @returns {Object} with 2 properties - audio and video.
  */
 JitsiConference.prototype.getStartMutedPolicy = function () {
     return this.startMutedPolicy;
 };
 
 /**
- * Sends message via the datachannels.
+ * Sends a message via the data channel.
  * @param to {string} the id of the endpoint that should receive the message.
  * If "" the message will be sent to all participants.
  * @param payload {object} the payload of the message.
 };
 
 /**
- * Sends broadcast message via the datachannels.
+ * Sends a broadcast message via the data channel.
  * @param payload {object} the payload of the message.
  * @throws NetworkError or InvalidStateError or Error if the operation fails.
  */

modules/RTC/JitsiLocalTrack.js

  * @param track underlying WebRTC MediaStreamTrack for new JitsiRemoteTrack
  * @param mediaType the MediaType of the JitsiRemoteTrack
  * @param videoType the VideoType of the JitsiRemoteTrack
- * @param resolution the video resoultion if it's a video track
+ * @param resolution the video resolution if it's a video track
  * @param deviceId the ID of the local device for this track
  * @param facingMode the camera facing mode used in getUserMedia call
  * @constructor
 
 /**
  * Sets the value of bytes sent statistic.
- * @param bytesSent {intiger} the new value
+ * @param bytesSent {integer} the new value (FIXME: what is an integer in js?)
  * NOTE: used only for audio tracks to detect audio issues.
  */
 JitsiLocalTrack.prototype._setByteSent = function (bytesSent) {
 };
 
 /**
- * Checks whether the attached MediaStream is reveiving data from source or
+ * Checks whether the attached MediaStream is receiving data from source or
  * not. If the stream property is null(because of mute or another reason) this
  * method will return false.
  * NOTE: This method doesn't indicate problem with the streams directly.

modules/RTC/JitsiRemoteTrack.js

  * @param mediaType the MediaType of the JitsiRemoteTrack
  * @param videoType the VideoType of the JitsiRemoteTrack
  * @param ssrc the SSRC number of the Media Stream
- * @param muted intial muted state of the JitsiRemoteTrack
+ * @param muted initial muted state of the JitsiRemoteTrack
  * @constructor
  */
 function JitsiRemoteTrack(rtc, conference, ownerJid, stream, track, mediaType, videoType,

modules/RTC/JitsiTrack.js

 };
 
 /**
- * Check if this is audiotrack.
+ * Check if this is an audio track.
  */
 JitsiTrack.prototype.isAudioTrack = function () {
     return this.getType() === MediaType.AUDIO;
 };
 
 /**
- * Check if this is videotrack.
+ * Check if this is a video track.
  */
 JitsiTrack.prototype.isVideoTrack = function () {
     return this.getType() === MediaType.VIDEO;
 };
 
 /**
- * Checks whether the MediaStream is avtive/not ended.
+ * Checks whether the MediaStream is active/not ended.
  * When there is no check for active we don't have information and so
  * will return that stream is active (in case of FF).
  * @returns {boolean} whether MediaStream is active.