message: invalid dash char in mediaservices 2019-05-01-preview
diff: "properties": {
  "language": {
  "type": "string",
  - "description": "Specifies the language (locale) used for speech-to-text transcription it should match the spoken language in the audio track. The value should be in BCP-47 format of 'language tag-region' (e.g: 'en-US'). The list of supported languages are 'en-US' and 'en-GB'."
  + "description": "Specifies the language (locale) used for speech-to-text transcription - it should match the spoken language in the audio track. The value should be in BCP-47 format of 'language tag-region' (e.g: 'en-US'). The list of supported languages are 'en-US' and 'en-GB'."
  },
  "inputTrackSelection": {
  "type": "array",
  