[PATCH] doc: add missing "none" value for diff.wsErrorHighlight

[Andreas Heiduk <asheiduk@gmail.com>]

The value has not eluded documentation so far.

Signed-off-by: Andreas Heiduk <asheiduk@gmail.com>
---
 Documentation/diff-config.txt  | 2 +-
 Documentation/diff-options.txt | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/Documentation/diff-config.txt b/Documentation/diff-config.txt
index cbce8ec63..c84ced8f6 100644
--- a/Documentation/diff-config.txt
+++ b/Documentation/diff-config.txt
@@ -200,7 +200,7 @@ diff.algorithm::
 +
 
 diff.wsErrorHighlight::
-	A comma separated list of `old`, `new`, `context`, that
+	A comma separated list of `old`, `new`, `context` and `none`, that
 	specifies how whitespace errors on lines are highlighted
 	with `color.diff.whitespace`.  Can be overridden by the
 	command line option `--ws-error-highlight=<kind>`
diff --git a/Documentation/diff-options.txt b/Documentation/diff-options.txt
index 89cc0f48d..903d68eb7 100644
--- a/Documentation/diff-options.txt
+++ b/Documentation/diff-options.txt
@@ -302,7 +302,7 @@ ifndef::git-format-patch[]
 --ws-error-highlight=<kind>::
 	Highlight whitespace errors on lines specified by <kind>
 	in the color specified by `color.diff.whitespace`.  <kind>
-	is a comma separated list of `old`, `new`, `context`.  When
+	is a comma separated list of `old`, `new`, `context` and `none`.  When
 	this option is not given, only whitespace errors in `new`
 	lines are highlighted.  E.g. `--ws-error-highlight=new,old`
 	highlights whitespace errors on both deleted and added lines.
-- 
2.13.3