[PATCH 2/3] doc: set Sphinx language config

[Jani Nikula]

Sphinx now requires setting the language:

Invalid configuration value found: 'language = None'. Update your
configuration to a valid language code. Falling back to 'en' (English).

Signed-off-by: Jani Nikula <jani.nikula at intel.com>
---
 conf.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/conf.py b/conf.py
index c208a702910f..651cf65609c3 100644
--- a/conf.py
+++ b/conf.py
@@ -66,7 +66,7 @@ release = u'1.0'
 #
 # This is also used if you do content translation via gettext catalogs.
 # Usually you set "language" from the command line for these cases.
-language = None
+language = 'en'
 
 # There are two options for replacing |today|: either, you set today to some
 # non-false value, then it is used:
-- 
2.39.2