[gtksourceview] docs: fix some warnings in hover documentation

[Christian Hergert <chergert src gnome org>]

commit 9f87100fdcabd67aeb934524f2b5f328e2149048
Author: Christian Hergert <chergert redhat com>
Date:   Wed Mar 10 13:46:22 2021 -0800

    docs: fix some warnings in hover documentation

 gtksourceview/gtksourcehovercontext.c | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/gtksourceview/gtksourcehovercontext.c b/gtksourceview/gtksourcehovercontext.c
index a122b26e..6e166738 100644
--- a/gtksourceview/gtksourcehovercontext.c
+++ b/gtksourceview/gtksourcehovercontext.c
@@ -144,6 +144,7 @@ _gtk_source_hover_context_add_provider (GtkSourceHoverContext  *self,
 
 /**
  * gtk_source_hover_context_get_view:
+ * @self: a #GtkSourceHoverContext
  *
  * Returns: (transfer none): the #GtkSourceView that owns the context
  */
@@ -157,6 +158,7 @@ gtk_source_hover_context_get_view (GtkSourceHoverContext *self)
 
 /**
  * gtk_source_hover_context_get_buffer:
+ * @self: a #GtkSourceHoverContext
  *
  * A convenience function to get the buffer.
  *