sysutils/htop: Fix typo in Makefile

[Maxim]

Fix variable name typo in htop's Makefile:

diff --git sysutils/htop/Makefile sysutils/htop/Makefile
index e28906080..fe9df3e62 100644
--- sysutils/htop/Makefile
+++ sysutils/htop/Makefile
@@ -23,7 +23,7 @@ RUN_DEPENDS = devel/desktop-file-utils
 
 NO_TEST =      Yes
 
-DEBUG_PACKAGES =       ${BUILD_PACKAEGS}
+DEBUG_PACKAGES =       ${BUILD_PACKAGES}
 
 CONFIGURE_STYLE =      autoreconf
 AUTOCONF_VERSION =     2.69