test(hedgedoc): Update tests for postgresql dependency

charts/hedgedoc/tests/80_subchart_postgresql_test.yaml

@@ -90,7 +90,7 @@ tests:
       - contains:
           path: spec.template.spec.containers[0].env
           content:
-            name: POSTGRES_DB
+            name: POSTGRES_DATABASE
             value: "hedgedoc"
         template: charts/postgresql/templates/primary/statefulset.yaml
   - it: should allow to change the database name
@@ -106,6 +106,6 @@ tests:
       - contains:
           path: spec.template.spec.containers[0].env
           content:
-            name: POSTGRES_DB
+            name: POSTGRES_DATABASE
             value: "test"
         template: charts/postgresql/templates/primary/statefulset.yaml
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