message: updated formatting for externalid description
diff: },
  "externalId": {
  "type": "string",
  - "description": "For external groups, this property contains the id of the group from the external identity provider, e.g. for Azure Active Directory aad://<tenant>.onmicrosoft.com/groups/<group object id>; otherwise the value is null."
  + "description": "For external groups, this property contains the id of the group from the external identity provider, e.g. for Azure Active Directory `aad://<tenant>.onmicrosoft.com/groups/<group object id>`; otherwise the value is null."
  }
  },
  "required": [
  },
  "externalId": {
  "type": "string",
  - "description": "Identifier of the external groups, this property contains the id of the group from the external identity provider, e.g. for Azure Active Directory aad://<tenant>.onmicrosoft.com/groups/<group object id>; otherwise the value is null."
  + "description": "Identifier of the external groups, this property contains the id of the group from the external identity provider, e.g. for Azure Active Directory `aad://<tenant>.onmicrosoft.com/groups/<group object id>`; otherwise the value is null."
  }
  },
  "required": [
  },
  "externalId": {
  "type": "string",
  - "description": "Identifier of the external groups, this property contains the id of the group from the external identity provider, e.g. for Azure Active Directory aad://<tenant>.onmicrosoft.com/groups/<group object id>; otherwise the value is null."
  + "description": "Identifier of the external groups, this property contains the id of the group from the external identity provider, e.g. for Azure Active Directory `aad://<tenant>.onmicrosoft.com/groups/<group object id>`; otherwise the value is null."
  }
  },
  "description": "Parameters supplied to the Update Group operation."
  