[gtksourceview] Fixed typo

[Marek Černocký <mcernocky src gnome org>]

commit 63f2f5de605b570169f469af3321c2a32402182f
Author: Marek Černocký <marek manet cz>
Date:   Sat Nov 28 14:36:52 2020 +0100

    Fixed typo

 gtksourceview/gtksourcecontextengine.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gtksourceview/gtksourcecontextengine.c b/gtksourceview/gtksourcecontextengine.c
index 858579ae..3d739ac8 100644
--- a/gtksourceview/gtksourcecontextengine.c
+++ b/gtksourceview/gtksourcecontextengine.c
@@ -6274,7 +6274,7 @@ _gtk_source_context_data_finish_parse (GtkSourceContextData  *ctx_data,
        {
                g_set_error (error, GTK_SOURCE_CONTEXT_ENGINE_ERROR,
                             GTK_SOURCE_CONTEXT_ENGINE_ERROR_BAD_FILE,
-                            _("Missing main language definition (id = “%s”.)"),
+                            _("Missing main language definition (id = “%s”)."),
                             gtk_source_language_get_id (ctx_data->lang));
                return FALSE;
        }