Shortcut Helper: fix wrong "open calendar" shortcut on the phone version

The shortcut is ACTION + K and not ACTION + L. This was already correct
for the large screen version of the helper, but wrong for the small
screen version.

Fixes: 309569033
Test: Manually
Flag: NONE Trivial change
Change-Id: I1efff8e4e66813e704a8d66cf699a0954a77af44