[gobject-introspection: 25/30] Convert FORMATS to tuple.

[Christoph Reiter <creiter src gnome org>]

commit f0434e06d4e201be7740a5b4d3c33e26183e8d8e
Author: rockon999 <rockon999 users noreply github com>
Date:   Mon Aug 6 02:55:14 2018 -0500

    Convert FORMATS to tuple.

 giscanner/docmain.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/giscanner/docmain.py b/giscanner/docmain.py
index 0120022b..f184014b 100644
--- a/giscanner/docmain.py
+++ b/giscanner/docmain.py
@@ -32,7 +32,7 @@ from .docwriter import DocWriter
 from .sectionparser import generate_sections_file, write_sections_file
 from .transformer import Transformer
 
-FORMATS = ['devdocs', 'mallard', 'sections']
+FORMATS = ('devdocs', 'mallard', 'sections')
 
 
 def doc_main(args):