remove source quoting policy

tests/functional/adapter/test_docs.py

@@ -10,7 +10,6 @@
     ref_models__docs_md,
     ref_models__ephemeral_copy_sql,
     ref_models__schema_yml,
-    ref_sources__schema_yml,
 )
 
 
@@ -67,6 +66,22 @@ def models(self):
         select first_name, ct from {{ref('ephemeral_summary')}}
         """
 
+        ref_sources__schema_yml = """
+        version: 2
+        sources:
+          - name: my_source
+            description: "{{ doc('source_info') }}"
+            loader: a_loader
+            schema: "{{ var('test_schema') }}"
+            tables:
+              - name: my_table
+                description: "{{ doc('table_info') }}"
+                identifier: seed
+                columns:
+                  - name: id
+                    description: "{{ doc('column_info') }}"
+        """
+
         return {
             "schema.yml": ref_models__schema_yml,
             "sources.yml": ref_sources__schema_yml,