message: fix ruby.md for release
diff: @@ -31,6 +31,7 @@ Please also specify `--ruby-sdks-folder=<path to the root directory of your azur
  namespace: "Azure::EventGrid::Mgmt::V2020_01_01_preview"
  output-folder: $(ruby-sdks-folder)/management/azure_mgmt_event_grid/lib
  +```
  ### Tag: package-2019-06 and ruby
  These settings apply only when `--tag=package-2019-06 --ruby` is specified on the command line.
  