CleanBot: fix named parameter `recurse`

Change-Id: Ide4f12eee407e0c6a52e23c9e61b67baaf1c8c4f
---
M scripts/category.py
1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/scripts/category.py b/scripts/category.py
index 4402d2d..6923a4a 100755
--- a/scripts/category.py
+++ b/scripts/category.py
@@ -1451,7 +1451,7 @@
 
     def treat(self, child) -> None:
         """Process the category."""
-        grandchildren = set(child.articles(self.opt.recurse))
+        grandchildren = set(child.articles(recurse=self.opt.recurse))
         # For advanced usage uncomment the next line to
         # check not only grandchildren articles but
         # grandchildren categories too:

