pgsql: Fix broken XML - Mailing list pgsql-committers

Fix broken XML

I messed this up in commit 87251e114967.

Per buildfarm member alabio, via Daniel Gustafsson.

Discussion: https://postgr.es/m/B94D82D1-7AF4-4412-AC02-82EAA6154957@yesql.se

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/81a2625eb2e4608ba6ca41b2bf548dce8d81ced7

Modified Files
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doc/src/sgml/ref/create_trigger.sgml | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)