Fix swagger for namespace on files path

public/swagger/swagger.yaml

@@ -21,7 +21,7 @@ paths:
     $ref: "./swagger-register.yaml#/paths"
   /port:
     $ref: "./swagger-port.yaml#/paths"
-  /__files__/{path}:
+  /__files__/{namespacePath}/{path}:
     $ref: "./swagger-files.yaml#/paths"
 
 components:
@@ -41,6 +41,13 @@ components:
       schema:
         type: string
 
+    namespacePath:
+      name: namespacePath
+      in: path
+      required: true
+      schema:
+        type: string
+
   schemas:
     ok:
       content: