Update README.md

README.md

@@ -65,7 +65,7 @@ suspend fun main() {
 }
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-Try running this model on NPU by using this .litertlm file and setting your EngineConfig’s backend to NPU. To check if your phone’s NPU is supported see this [guide](https://ai.google.dev/edge/litert/next/npu).
+Try running this model on NPU by using the corresponding `litertlm` file and setting your EngineConfig’s backend and visionBackend to NPU. To check if your phone’s NPU is supported see this [guide](https://ai.google.dev/edge/litert/next/npu).
 
 ## Desktop