iio: fix typos

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h
index 2c395a8..677e3d8 100644
--- a/include/linux/iio/iio.h
+++ b/include/linux/iio/iio.h
@@ -164,7 +164,7 @@
  * IIO_ENUM() - Initialize enum extended channel attribute
  * @_name:	Attribute name
  * @_shared:	Whether the attribute is shared between all channels
- * @_e:		Pointer to a iio_enum struct
+ * @_e:		Pointer to an iio_enum struct
  *
  * This should usually be used together with IIO_ENUM_AVAILABLE()
  */
@@ -180,9 +180,9 @@
 /**
  * IIO_ENUM_AVAILABLE() - Initialize enum available extended channel attribute
  * @_name:	Attribute name ("_available" will be appended to the name)
- * @_e:		Pointer to a iio_enum struct
+ * @_e:		Pointer to an iio_enum struct
  *
- * Creates a read only attribute which list all the available enum items in a
+ * Creates a read only attribute which lists all the available enum items in a
  * space separated list. This should usually be used together with IIO_ENUM()
  */
 #define IIO_ENUM_AVAILABLE(_name, _e) \