message: doc: fix ice metadata + spelling
  Cr-Commit-Position: refs/heads/master@{#33744}
diff: # ICE
  -<?% config.freshness.owner = 'jonaso' %?> <?% config.freshness.reviewed =
  -'2021-04-12' %?>
  +<?% config.freshness.owner = 'jonaso' %?> <?% config.freshness.reviewed = '2021-04-12' %?>
  ## Overview
  @@ -86,7 +85,7 @@ All of these steps are invoked by interactions with `PeerConnection`.
  form new `cricket::Connection`(s). Candidates are compatible if it is
  possible to send/receive data (e.g ipv4 can only send to ipv4, tcp can only
  connect to tcp etc...) The newly formed `cricket::Connection`(s) will be
  - added to the `cricket::IceController` that will decides which
  + added to the `cricket::IceController` that will decide which
  `cricket::Connection` to send STUN ping on.
  4. [`P2PTransportChannel::SignalCandidatePairChanged`](https://source.chromium.org/chromium/chromium/src/+/master:third_party/webrtc/p2p/base/ice_transport_internal.h;l=310;drc=8cb97062880b0e0a78f9d578370a01aced81a13f)
  @@ -98,5 +97,5 @@ All of these steps are invoked by interactions with `PeerConnection`.
  5. [`P2PTransportChannel::SignalIceTransportStateChanged`](https://source.chromium.org/chromium/chromium/src/+/master:third_party/webrtc/p2p/base/ice_transport_internal.h;l=323;drc=8cb97062880b0e0a78f9d578370a01aced81a13f)
  The initial selection of a connection makes `P2PTransportChannel` signal up
  - stack that state has changed, which will make [`cricket::DtlsTransport`]
  - initiate DTLS handshake.
  + stack that state has changed, which may make [`cricket::DtlsTransportInternal`](https://source.chromium.org/chromium/chromium/src/+/master:third_party/webrtc/p2p/base/dtls_transport_internal.h;l=63;drc=653bab6790ac92c513b7cf4cd3ad59039c589a95)
  + initiate a DTLS handshake (depending on the DTLS role).
  