Update README.md

README.md

@@ -2,6 +2,9 @@
 license: apache-2.0
 language:
 - en
+base_model:
+- google/gemma-3-270m-it
+base_model_relation: quantized
 pipeline_tag: text-generation
 tags:
 - chat
@@ -9,7 +12,7 @@ tags:
 # gemma-3-270m-it-MNN
 
 ## Introduction
-This model is a 4-bit quantized version of the MNN model exported from gemma-3-270m-it using [llmexport](https://github.com/alibaba/MNN/tree/master/transformers/llm/export).
+This model is a 8-bit quantized version of the MNN model exported from gemma-3-270m-it using [llmexport](https://github.com/alibaba/MNN/tree/master/transformers/llm/export).
 
 ## Download
 ```bash