[1.5.x] Fixed #21440 -- Typo in topics/http/shortcuts.txt

Thanks olof.bjarnason at gmail.com for the report.

Backport of 6e9e6ca071 from master
[1.5.x] Fixed #21440 -- Typo #2 in topics/http/shortcuts.txt

Thanks alasdair.

Backport of d011714002 from master