[Pages] Add clarification to call order of pages onRequest methods #19290
Description
Existing documentation URL(s)
https://developers.cloudflare.com/pages/functions/api-reference/
What changes are you suggesting?
In the list of onRequest method variants available, the documentation does not discuss what happens if both the generic and specific-verb method are defined and exported.
Some simple extra text to clarify the behaviour of functions will prevent people needing to test this behaviour themselves.
Additional information
I have created a draft PR for a proposed addition of wording at #19289