kbuild: deb-pkg: Fix a spell typo in mkdebian script

Signed-off-by: Woody Suwalski <terraluna977@gmail.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>

scripts/package/mkdebian

@@ -190,7 +190,7 @@ EOF
 
 # Generate copyright file
 cat <<EOF > debian/copyright
-This is a packacked upstream version of the Linux kernel.
+This is a packaged upstream version of the Linux kernel.
 
 The sources may be found at most Linux archive sites, including:
 https://www.kernel.org/pub/linux/kernel