Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/Documentation/driver-api/iio/buffers.rst b/Documentation/driver-api/iio/buffers.rst
index 02c99a6..e9036ef 100644
--- a/Documentation/driver-api/iio/buffers.rst
+++ b/Documentation/driver-api/iio/buffers.rst
@@ -26,7 +26,7 @@
 ================
 
 The meta information associated with a channel reading placed in a buffer is
-called a scan element . The important bits configuring scan elements are
+called a scan element. The important bits configuring scan elements are
 exposed to userspace applications via the
 :file:`/sys/bus/iio/iio:device{X}/scan_elements/*` directory. This file contains
 attributes of the following form: