[gssdp] doc: Fix dist for tarball

[Jens Georg <jensgeorg src gnome org>]

commit e2ba94f7e78833f78b7fafd420a046f3c8100ffb
Author: Jens Georg <mail jensge org>
Date:   Sat Jul 3 18:41:38 2021 +0200

    doc: Fix dist for tarball

 build-aux/dist-docs.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/build-aux/dist-docs.py b/build-aux/dist-docs.py
index d9c7cdc..971c7e6 100644
--- a/build-aux/dist-docs.py
+++ b/build-aux/dist-docs.py
@@ -4,7 +4,7 @@ import os
 import shutil
 
 references = [
-    'docs/GSSDP',
+    'doc/GSSDP',
 ]
 
 sourceroot = os.environ.get('MESON_SOURCE_ROOT')