fix: do not add a config folder to api path (#1187)

__tests__/build-docs/build-docs-with-config-option/nested/message-schema.yaml

@@ -0,0 +1,4 @@
+type: object
+properties:
+  message:
+    type: string

__tests__/build-docs/build-docs-with-config-option/nested/openapi.yaml

@@ -0,0 +1,19 @@
+openapi: 3.1.0
+servers:
+  - url: http://localhost
+info:
+  title: Sample API
+  version: 1.0.0
+paths:
+  /hello:
+    get:
+      operationId: getMessage
+      security: []
+      summary: Get a greeting message
+      responses:
+        200:
+          description: OK
+          content:
+            application/json:
+              schema:
+                $ref: ./message-schema.yaml

__tests__/build-docs/build-docs-with-config-option/nested/redocly.yaml

@@ -0,0 +1,5 @@
+extends:
+  - minimal
+theme:
+  openapi:
+    htmlTemplate: ../index.hbs