pgsql: Fix two typos in a comment - Mailing list pgsql-committers

Fix two typos in a comment

They were introduced in 898e5e3290a7; backpatch to 12.

Branch
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REL_12_STABLE

Details
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https://git.postgresql.org/pg/commitdiff/8fdde45e32e486903d6866a4b0a761f418463493

Modified Files
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src/backend/partitioning/partdesc.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)