selftests: kmod: Fix typo in kmod.sh

This patch fixes some spelling typos in kmod.sh

Signed-off-by: Masanari Iida <[e-mail]>
Acked-by: Randy Dunlap <[e-mail]>
Signed-off-by: Shuah Khan <[e-mail]>

tools/testing/selftests/kmod/kmod.sh

···
 # override by exporting to your environment prior running this script.
 # For instance this script assumes you do not have xfs loaded upon boot.
 # If this is false, export DEFAULT_KMOD_FS="ext4" prior to running this
-# script if the filesyste module you don't have loaded upon bootup
+# script if the filesystem module you don't have loaded upon bootup
 # is ext4 instead. Refer to allow_user_defaults() for a list of user
 # override variables possible.
 #
···
 config_reset()
 {
 	if ! echo -n "1" >"$DIR"/reset; then
-		echo "$0: reset shuld have worked" >&2
+		echo "$0: reset should have worked" >&2
 		exit 1
 	fi
 }
···
 	echo Example uses:
 	echo
 	echo "${TEST_NAME}.sh		-- executes all tests"
-	echo "${TEST_NAME}.sh -t 0008	-- Executes test ID 0008 number of times is recomended"
+	echo "${TEST_NAME}.sh -t 0008	-- Executes test ID 0008 number of times is recommended"
 	echo "${TEST_NAME}.sh -w 0008	-- Watch test ID 0008 run until an error occurs"
 	echo "${TEST_NAME}.sh -s 0008	-- Run test ID 0008 once"
 	echo "${TEST_NAME}.sh -c 0008 3	-- Run test ID 0008 three times"