[igt-dev] [PATCH i-g-t 2/4] CONTRIBUTING: Add reference for GTKDoc

[Tales Aparecida]

Add reference links about code documentation.

Signed-off-by: Tales Aparecida <tales.aparecida at gmail.com>
---
 CONTRIBUTING.md | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 6d1294ad..2b5a78b5 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -13,6 +13,12 @@ The Code
 - The code should follow kernel coding style:
   https://www.kernel.org/doc/html/latest/process/coding-style.html
 
+- The in-code documentation should follow GtkDoc specifications:
+  https://developer-old.gnome.org/gtk-doc-manual/stable/documenting.html.
+  For an updated version, you can also download the GtkDoc's
+  [source code][gtkdoc-repo] and open its manual with `yelp` directly by typing
+  in a terminal: `yelp file:///absolute/path/to/gtk-doc/help/manual/C/index.docbook`
+
 - Testcases (subtests) have to use minus signs (-) as a word separator.
   The generated documentation contains glossary of commonly used terms.
 
@@ -31,6 +37,7 @@ The Code
   more automatic conversions.
 
 [igt-describe]: https://drm.pages.freedesktop.org/igt-gpu-tools/igt-gpu-tools-Core.html#igt-describe
+[gtkdoc-repo]: https://gitlab.gnome.org/GNOME/gtk-doc
 
 
 Sending Patches
-- 
2.37.0