sdpMLineIndex case issue

[PapyElGringo]

If you check the https://github.com/flutter-webrtc/webrtc-interface/blob/main/lib/src/rtc_ice_candidate.dart file you can see that there is a case issue for sdpMLineIndex property for the L letter which is in lowercase where it shouldn't.
The main issue it's in inconsistent with the JSON property of the toMap method.

[cloudwebrtc]

I looked at the API and indeed there is a typo here.
https://developer.mozilla.org/en-US/docs/Web/API/RTCIceCandidate/sdpMLineIndex