board/common: fix missing quote in generated /etc/os-release

Signed-off-by: Joachim Wiberg <[email protected]>

Author: troglobit

board/common/post-build.sh

@@ -28,7 +28,7 @@ cat <<-EOF >"${TARGET_DIR}/etc/os-release"
 	PRETTY_NAME="$tagline $VERSION"
 	ID_LIKE="buildroot"
 	VERSION="${VERSION}"
-	VERSION_ID=${VERSION}"
+	VERSION_ID="${VERSION}"
 	BUILD_ID="${GIT_VERSION}"
 	HOME_URL="https://github.com/kernelkit/curios"
 	VENDOR_NAME="KernelKit"