pgsql: Revert "Fix typo in documentation of toast storage"

Revert "Fix typo in documentation of toast storage"

This reverts commit 058ef3a, per complains from Magnus Hagander and Vik
Fearing.

Branch
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REL_10_STABLE

Details
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https://git.postgresql.org/pg/commitdiff/e6e8bd4cf77070c1672b27b6fa518ae5b2cea706

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