Small doc fix for pageinspect - Mailing list pgsql-hackers

I noticed today that the signature for two functions is wrong
in the documentation:

- "heap_page_item_attrs" has the argument order and return type wrong
  and is lacking types

- "tuple_data_split" is lacking the type for "rel_oid"

Patch attached.

This should be backpatched down to 9.6 where the functions have been added.

Yours,
Laurenz Albe