busybox: fix typo 'overwritting'

Signed-off-by: Thomas De Schampheleire <thomas.de.schampheleire@gmail.com>
Acked-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/busybox/busybox.mk

@@ -184,7 +184,7 @@ define BUSYBOX_INSTALL_WATCHDOG_SCRIPT
 endef
 endif
 
-# Enable "noclobber" in install.sh, to prevent BusyBox from overwritting any
+# Enable "noclobber" in install.sh, to prevent BusyBox from overwriting any
 # full-blown versions of apps installed by other packages with sym/hard links.
 define BUSYBOX_NOCLOBBER_INSTALL
 	$(SED) 's/^noclobber="0"$$/noclobber="1"/' $(@D)/applets/install.sh