docs: pdfdocs: Preserve inter-phrase space in Korean translations

In Korean typesetting, inter-phrase spaces in Hangul text have
a similar role as the the inter-word spaces in Latin text.
They can be preserved by the \xeCJKsetup{CJKspace=true} option.

Signed-off-by: Akira Yokosawa <akiyks@gmail.com>
Link: https://lore.kernel.org/r/68de2e52-e6d1-3f01-c097-15ba7b28a319@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
diff --git a/Documentation/conf.py b/Documentation/conf.py
index 980be06..2ccfe444 100644
--- a/Documentation/conf.py
+++ b/Documentation/conf.py
@@ -426,6 +426,7 @@
 	    \\renewcommand{\\CJKrmdefault}{KRserif}%
 	    \\renewcommand{\\CJKsfdefault}{KRsans}%
 	    \\renewcommand{\\CJKttdefault}{KRmono}%
+	    \\xeCJKsetup{CJKspace = true} % For inter-phrase space
 	}
 	\\newcommand{\\kerneldocEndKR}{\\endgroup}
 	\\newcommand{\\kerneldocBeginJP}{%