Simplier way of doing generic calls with call_module

modpol_core/modules/change_policy.lua

@@ -93,9 +93,9 @@ end
 -- @param policy (string) policy slug
 -- @param input (string) input content
 function change_policy:approve_change(module_slug, policy, input)
-   self.org:approve(
+   self.org:call_module(
       approval_module,
-      self,
+      self.initiator,
       {prompt = "Update " .. policy .. " policy on module " ..
           module_slug .. " with: " .. input .. " ?"},
       function()
@@ -108,7 +108,8 @@ function change_policy:approve_change(module_slug, policy, input)
             self.initiator, self.org.id)
          if self.data.result then self.data.result() end
          self.org:delete_process(self.id)
-      end
+      end,
+      self.id
    )
 end