docs: correct lineage wording (fine-tuned from closest-language base)

README.md

@@ -5,6 +5,8 @@ license: cc-by-nc-nd-4.0
 pipeline_tag: text-to-speech
 datasets:
 - TigreGotico/tts_vc_sabela_gl-ES_miro
+base_model:
+- OpenVoiceOS/phoonnx_pt-PT_miro_unicode
 tags:
 - phoonnx
 - onnx
@@ -15,7 +17,7 @@ tags:
 
 # phoonnx_gl-ES_miro_unicode
 
-This is a text-to-speech voice model for **Galician**. The voice is **Miro**, a male voice. It uses the phoonnx VITS architecture with a unicode character-based phonemizer, exported to ONNX for CPU inference.
+This is a text-to-speech voice model for **Galician**. The voice is **Miro**, a male voice. It uses the phoonnx VITS architecture with a unicode character-based phonemizer, exported to ONNX for CPU inference. It was fine-tuned from the base voice `phoonnx_pt-PT_miro_unicode`, the closest available language for this voice.
 
 ## How to use