kbuild: fix a typo in scripts/Makefile.host

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
diff --git a/scripts/Makefile.host b/scripts/Makefile.host
index 6689364..395a240 100644
--- a/scripts/Makefile.host
+++ b/scripts/Makefile.host
@@ -44,7 +44,7 @@
 host-cobjs	:= $(sort $(foreach m,$(__hostprogs),$($(m)-objs)))
 
 # C++ code
-# C++ executables compiled from at least on .cc file
+# C++ executables compiled from at least one .cc file
 # and zero or more .c files
 host-cxxmulti	:= $(foreach m,$(__hostprogs),$(if $($(m)-cxxobjs),$(m)))