fix a mistake in writing : --prefix=$(PREFIX) [makefile]
fix a mistake in writing : --prefix=$(PREFIX) [makefile]

Former-commit-id: 695af6dd8190ee8e84131b65405934cf0121c701
muslih/alfanous,muslih/alfanous,muslih/alfanous,muslih/alfanous,muslih/alfanous,muslih/alfanous,muslih/alfanous