Changes to Convert webpage to PDF

added the non-success response with the status 400

added the non-success response with the status 422

request body became required

added the new optional request property projectId

added the optional property linkToDocs to the response with the 503 status

the region request property type changed from string to no type

the response property context/items/params became required for the status 503

removed the enum value bom of the request property region

removed the enum value fra of the request property region

removed the enum value hkg of the request property region

removed the enum value iad of the request property region

removed the enum value lax of the request property region

removed the enum value ord of the request property region

removed the enum value scl of the request property region

added the new optional request property region

added the non-success response with the status 503

removed the non-success response with the status 500