manuals: add initial stylechecks with Vale

Use the "Vale" (https://vale.sh) tool to perform text style checks
Run "make stylecheck" to run the checks.

This just checks the text, not the Sphinx syntax style choices.

(From yocto-docs rev: d145e1dc45dc0792c8b8f7e73500b56face1e710)

Signed-off-by: Michael Opdenacker <michael.opdenacker@bootlin.com>
Suggested-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 14 insertions, 0 deletions

diff --git a/documentation/README b/documentation/README
index 4d31036e69..8035418cac 100644
--- a/documentation/README
+++ b/documentation/README
@@ -151,6 +151,20 @@ dependencies in a virtual environment:
  $ pipenv install
  $ pipenv run make html
 
+Style checking the Yocto Project documentation
+==============================================
+
+The project is starting to use Vale (https://vale.sh/)
+to validate the text style.
+
+To install Vale:
+
+ $ pip install vale
+
+To run Vale:
+
+ $ make stylecheck
+
 Sphinx theme and CSS customization
 ==================================