message: Fix set LTR policy example
diff: {
  "name": "longTermRetentionServerName",
  "in": "path",
  + "description": "The name of the server",
  "required": true,
  "type": "string"
  },
  {
  "name": "longTermRetentionDatabaseName",
  "in": "path",
  + "description": "The name of the database",
  "required": true,
  "type": "string"
  },
  {
  "name": "longTermRetentionServerName",
  "in": "path",
  + "description": "The name of the server",
  "required": true,
  "type": "string"
  },
  {
  "name": "longTermRetentionDatabaseName",
  "in": "path",
  + "description": "The name of the database",
  "required": true,
  "type": "string"
  },
  {
  "name": "longTermRetentionServerName",
  "in": "path",
  + "description": "The name of the server",
  "required": true,
  "type": "string"
  },
  {
  "name": "longTermRetentionDatabaseName",
  "in": "path",
  + "description": "The name of the database",
  "required": true,
  "type": "string"
  },
  {
  "name": "longTermRetentionServerName",
  "in": "path",
  + "description": "The name of the server",
  "required": true,
  "type": "string"
  },
  