message: start_network: fix url in note
diff: @@ -86,7 +86,7 @@ def run(args):
  f"Keys and certificates have been copied to the common folder: {network.common_dir}"
  )
  LOG.info(
  - "See https://microsoft.github.io/CCF/main/users/issue_commands.html for more information"
  + "See https://microsoft.github.io/CCF/main/use_apps/issue_commands.html for more information"
  )
  LOG.warning("Press Ctrl+C to shutdown the network")
  