[gi-docgen/for-main] Add logo images to the source dist

[Emmanuele Bassi <ebassi src gnome org>]

commit fae74fbabfddb56c21461c8b8594496ceef653d9
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Sat Dec 11 00:50:34 2021 +0000

    Add logo images to the source dist

 MANIFEST.in | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/MANIFEST.in b/MANIFEST.in
index c644e29..f3a2f79 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -13,7 +13,9 @@ include LICENSES/*.txt
 include code-of-conduct.md
 include docs/*.1
 include docs/*.css
+include docs/*.png
 include docs/*.py
+include docs/*.svg
 include docs/Makefile
 include examples/*.js
 include examples/*.toml