[vte] introspection: Fix signedness in vte_terminal_feed_child's annotation

[Egmont Koblinger <egmontkob src gnome org>]

commit cdccfe59db102628857086bd3b89de77b6de1d73
Author: Egmont Koblinger <egmont gmail com>
Date:   Sat Nov 16 00:35:05 2019 +0100

    introspection: Fix signedness in vte_terminal_feed_child's annotation
    
    https://gitlab.gnome.org/GNOME/vte/issues/201

 src/vtegtk.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/vtegtk.cc b/src/vtegtk.cc
index 3b9fb415..1f749233 100644
--- a/src/vtegtk.cc
+++ b/src/vtegtk.cc
@@ -2919,7 +2919,7 @@ vte_terminal_feed(VteTerminal *terminal,
 /**
  * vte_terminal_feed_child:
  * @terminal: a #VteTerminal
- * @text: (array length=length) (element-type gchar) (allow-none): data to send to the child
+ * @text: (array length=length) (element-type guint8) (allow-none): data to send to the child
  * @length: length of @text in bytes, or -1 if @text is NUL-terminated
  *
  * Sends a block of UTF-8 text to the child as if it were entered by the user