pgsql: doc: Fix description of pg_stat_all_tables.n_tup_upd

doc: Fix description of pg_stat_all_tables.n_tup_upd

Issue caused by an incorrect merge done in f507895.

This issue only impacts v11 and v12.

Author: Guillaume Lelarge
Discussion: /messages/by-id/CAECtzeUAL3qoebLBDnn2DfWYS0Kww-yqDicQQ3r+JS5Yu1n6FA@mail.gmail.com
Backpatch-through: 11

Branch
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REL_12_STABLE

Details
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https://git.postgresql.org/pg/commitdiff/e9c8907c3b39de09618c3f62c499f45c22ca8ce7

Modified Files
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doc/src/sgml/monitoring.sgml | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)