Fix typo in renovate.json (#10)

diff --git a/renovate.json b/renovate.json
index 69a18b5..f59f762 100644
--- a/renovate.json
+++ b/renovate.json
@@ -1,3 +1,3 @@
-{ "$schema": "https://docs.renovatebot.com/renovate-schema.json",
+{ "$schema": "https://docs.renovatebot.com/renovate-schema.json"
 , "extends": ["local>benkard/.github:renovate-config"]
 }