Update abaplint.json

Author: lucasborin

abaplint.json

@@ -148,7 +148,7 @@
     "unused_methods": true,
     "unused_types": true,
     "unused_variables": {
-      "severity": "Warning",
+      "severity": "Warning"
     },
     "use_bool_expression": true,
     "use_class_based_exceptions": true,