Fix class name on documentation
@ -84,7 +84,7 @@ module GRPC
# channel:
#
# - :channel_override
# when present, this must be a pre-created GRPC::Channel. If it's
# when present, this must be a pre-created GRPC::Core::Channel. If it's
# present the host and arbitrary keyword arg areignored, and the RPC
# connection uses this channel.