iio: fix Kconfig typos

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
diff --git a/drivers/iio/Kconfig b/drivers/iio/Kconfig
index 9af763a..be8e303 100644
--- a/drivers/iio/Kconfig
+++ b/drivers/iio/Kconfig
@@ -23,7 +23,7 @@
 config IIO_BUFFER_CB
 boolean "IIO callback buffer used for push in-kernel interfaces"
 	help
-	  Should be selected by any drivers that do-inkernel push
+	  Should be selected by any drivers that do in-kernel push
 	  usage.  That is, those where the data is pushed to the consumer.
 
 config IIO_KFIFO_BUF