[library-web] misc: use string representation in debugging output

[Frederic Peters <fpeters src gnome org>]

commit f0df7513b38574a5b595f91e23c402500aa22097
Author: Frédéric Péters <fpeters 0d be>
Date:   Mon Aug 10 16:39:52 2015 +0200

    misc: use string representation in debugging output

 src/modtypes/mallard.py |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/modtypes/mallard.py b/src/modtypes/mallard.py
index 01887cf..90b23f4 100644
--- a/src/modtypes/mallard.py
+++ b/src/modtypes/mallard.py
@@ -538,4 +538,4 @@ class MallardModule(DocModule):
         if not self.extended_by_documents:
             self.extended_by_documents = []
         self.extended_by_documents.append(doc)
-        logging.debug('mallard combination of %r and %r' % (self, doc))
+        logging.debug('mallard combination of %s and %s' % (self, doc))