Fix create_sysroot_disk.sh (pixie-io#2151)

Summary: Modify the parameters to keep them consistent.

Relevant Issues: N/A

Type of change: /kind chore

Test Plan: N/A

Signed-off-by: co63oc <co63oc@users.noreply.github.com>

Author: co63oc

bazel/test_runners/qemu_with_kernel/create_sysroot_disk.sh

@@ -24,11 +24,11 @@ SYSROOT=""
 EXTRAS=""
 
 usage() {
-    echo "Usage: $0 -o <output_disk> -s <sysroot tar.gz> -b <busybox> -e <src>:<dest>,<src2>:<dest2> -k <kernel_package>"
+    echo "Usage: $0 -o <output_disk> -s <sysroot.tar.gz> -b <busybox> -e <src>:<dest>,<src2>:<dest2> -k <kernel_package>"
     echo "       <output_disk>           The generated ext2fs file system image as a qcow2 file"
     echo "       <sysroot.tar.gz>        The input sysroot to use for the disk"
     echo "       <additional_files>      Additional files that need to be written to the image"
-    echo "       <kernel package>        The tar.gz package of kernel and header files."
+    echo "       <kernel_package>        The tar.gz package of kernel and header files."
     exit 1
 }