Add note that pre-convention configuration takes precedence over data annotation

[Peter-B-]

According to 28541, pre-convention configuration takes precedence over data annotation. I think this should be stated in the documentation.

[ajcvickers]

@Peter-B- We discussed this in triage. The note is good, but please leave it as a single line and remove the link and other text.

[Peter-B-]

Hi @ajcvickers, thanks for your feedback. I removed the second line.

[ajcvickers]

Thanks!