package/usb_modeswitch: drop unicode space in comment

Commit "a554109af8 package/usb_modeswitch: disable parallel build" added
a unicode space in a comment. Replace it with a normal ASCII space for
consistency with elsewhere.

Signed-off-by: Ricardo Martincoski <ricardo.martincoski@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
(cherry picked from commit 8be8c72c2ba6cf4c0951e577199e69e91e9f7f3d)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/usb_modeswitch/usb_modeswitch.mk

@@ -10,7 +10,7 @@ USB_MODESWITCH_SITE = http://www.draisberghof.de/usb_modeswitch
 USB_MODESWITCH_DEPENDENCIES = libusb
 USB_MODESWITCH_LICENSE = GPL-2.0+
 USB_MODESWITCH_LICENSE_FILES = COPYING
-# Package does not build in parallel due to improper make rules
+# Package does not build in parallel due to improper make rules
 USB_MODESWITCH_MAKE = $(MAKE1)
 
 USB_MODESWITCH_BUILD_TARGETS = static