message: doc: update bitcoin.conf maxconnections info
diff: # Port on which to listen for connections (default: 8333, testnet: 18333, signet: 38333, regtest: 18444)
  #port=
  -# Maximum number of inbound+outbound connections.
  +# Maximum number of inbound + outbound connections (default: 125). This option
  +# applies only if inbound connections are enabled; otherwise, the number of connections
  +# will not be more than 11: 8 full-relay connections, 2 block-relay-only ones, and
  +# occasionally 1 short-lived feeler or extra outbound block-relay-only connection.
  +# These limits do not apply to connections added manually with the -addnode
  +# configuration option or the addnode RPC, which have a separate limit of 8 connections.
  #maxconnections=
  #
  