t5531: avoid using an abbreviated option
authorJohannes Schindelin <johannes.schindelin@gmx.de>
Mon, 25 Mar 2019 18:14:20 +0000 (11:14 -0700)
committerJunio C Hamano <gitster@pobox.com>
Tue, 2 Apr 2019 00:54:59 +0000 (09:54 +0900)
It was probably just an oversight: the `--recurse-submodules` option
puts the term "submodules" in the plural form, not the singular one.

To avoid future problems in case that another option is introduced that
starts with the prefix `--recurse-submodule`, let's just fix this.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
No differences found