ci: Update the TF-M version in fih test

Signed-off-by: Sherry Zhang <sherry.zhang2@arm.com>
Change-Id: I357ca9266629310deddf8431aa912f3fdbe9f34c
diff --git a/docs/design.md b/docs/design.md
old mode 100644
new mode 100755
index 25362ef..e61113d
--- a/docs/design.md
+++ b/docs/design.md
@@ -1311,6 +1311,7 @@
 are issued from the MCUboot source directory):
 
 ```sh
+$ mkdir docker
 $ ./ci/fih-tests_install.sh
 $ FIH_LEVEL=MCUBOOT_FIH_PROFILE_MEDIUM BUILD_TYPE=RELEASE SKIP_SIZE=2 \
     DAMAGE_TYPE=SIGNATURE ./ci/fih-tests_run.sh