Fix minor discrepancy in "make help"

Makefile.help

@@ -24,10 +24,10 @@ help:
 	@echo '  hosttools  		- build sed for the host.'
 	@echo '  			  You can use these commands if the commands on the host'
 	@echo '  			  is unusable. Afterwards use it like:'
-	@echo '			  make SED="$(objtree)/sed"'
+	@echo '  			  make SED="$(objtree)/sed"'
 	@echo
 	@echo 'Installation:'
-	@echo '  install		- install busybox into $(CONFIG_PREFIX)'
+	@echo '  install		- install busybox into CONFIG_PREFIX'
 	@echo '  uninstall'
 	@echo
 	@echo 'Development:'