Fix indentation in SDL

Cito · Cito · commit f25fd583e098 · 2021-12-24T13:26:54.000+01:00
diff --git a/tests/validation/harness.py b/tests/validation/harness.py
@@ -15,7 +15,7 @@
 
 test_schema = build_schema(
     """
-   interface Mammal {
+    interface Mammal {
       mother: Mammal
       father: Mammal
     }
