package/jailhouse: fix python helper scripts installation

When compiling jailhouse with BR2_PACKAGE_JAILHOUSE_HELPER_SCRIPTS=y,
installation is failing with error:

    /bin/sh: -c: line 1: syntax error near unexpected token ')'

This error is due to an extra ')' character in the macro
JAILHOUSE_INSTALL_HELPER_SCRIPTS.

This commit fixes this typo.

Signed-off-by: Raimundo Sagarzazu <rai.sagarzazu@outlook.com>
[Julien: reworded the commit log]
Signed-off-by: Julien Olivain <ju.o@free.fr>

package/jailhouse/jailhouse.mk

@@ -44,7 +44,7 @@ define JAILHOUSE_INSTALL_HELPER_SCRIPTS
 	$(HOST_DIR)/bin/python setup.py \
 		install --no-compile \
 		$(PKG_PYTHON_SETUPTOOLS_INSTALL_OPTS) \
-		--root=$(TARGET_DIR))
+		--root=$(TARGET_DIR)
 endef
 endif