Thread: pgsql: Fix comments related to table AMs

Fix comments related to table AMs

Incorrect function names were referenced.  As this fixes some portions
of tableam.h, that is mentioned in the docs as something to look at when
implementing a table AM, backpatch down to 12 where this has been
introduced.

Author: Hironobu Suzuki
Discussion: https://postgr.es/m/8fe6d672-28dd-3f1d-7aed-ac2f6d599d3f@interdb.jp
Backpatch-through: 12

Branch
------
REL_12_STABLE

Details
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https://git.postgresql.org/pg/commitdiff/330410ecadfb406c99d08c24efde651e18f653bf

Modified Files
--------------
src/backend/access/heap/heapam.c |  6 +++---
src/include/access/tableam.h     | 21 +++++++++++----------
2 files changed, 14 insertions(+), 13 deletions(-)