This commit removes an extra colon from Patch description text in the
Create Strategy form.
Test Plan:
PASS: Install starlingx-dashboard package, restart
Horizon and open Create Strategy form in order to verify the patch
description has been updated properly.
Closes-bug: 2025388
Change-Id: I66573822f6581be70ac8c51ba72e3b7b70bd5edc
Signed-off-by: Rafael Moyano <rafael.moyano@windriver.com>