Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/Documentation/dev-tools/index.rst b/Documentation/dev-tools/index.rst
index e313925..b0522a4 100644
--- a/Documentation/dev-tools/index.rst
+++ b/Documentation/dev-tools/index.rst
@@ -3,8 +3,8 @@
 ================================
 
 This document is a collection of documents about development tools that can
-be used to work on the kernel.  For now, the documents have been pulled
-together without any significant effot to integrate them into a coherent
+be used to work on the kernel. For now, the documents have been pulled
+together without any significant effort to integrate them into a coherent
 whole; patches welcome!
 
 .. class:: toc-title