[gtk] gsk: Add GskParseErrorFunc to the docs

[Timm Bäder <baedert src gnome org>]

commit df1d2b84173a65eda8275170505c69b070c03dc8
Author: Timm Bäder <mail baedert org>
Date:   Fri Dec 27 08:30:28 2019 +0100

    gsk: Add GskParseErrorFunc to the docs

 docs/reference/gsk/gsk4-sections.txt | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/docs/reference/gsk/gsk4-sections.txt b/docs/reference/gsk/gsk4-sections.txt
index c81fdfeb56..0f464bd195 100644
--- a/docs/reference/gsk/gsk4-sections.txt
+++ b/docs/reference/gsk/gsk4-sections.txt
@@ -30,6 +30,7 @@ GskRenderNodeType
 gsk_render_node_get_node_type
 gsk_render_node_draw
 GskSerializationError
+GskParseErrorFunc
 gsk_render_node_serialize
 gsk_render_node_deserialize
 gsk_render_node_write_to_file