I just checked the request letter and the chart. The letter and the chart do not specify how the format should be when providing the date of birth. I think you should be fine as there is no specification. But, if you haven’t submitted it yet, you can always reprint and write it the way it’s written in the passport. In Canada the standard (yyyy-mm-dd) format differs from some other formats used around the world. Unless it’s clearly specified how it should be formatted, then always use the way it is documented on your passport. In this case this case because they did not specify how to write the date of birth, you should be fine. Best of luck, you’re near the end of this process.