Fix pipeline tag

The current pipeline tag is incorrect, which is fixed here.

README.md

@@ -1,6 +1,6 @@
 ---
-library_name: transformers
-license: mit
+base_model:
+- maitrix-org/Voila-base
 datasets:
 - maitrix-org/Voila-Benchmark
 - maitrix-org/Voila-million-voice
@@ -11,9 +11,9 @@ language:
 - de
 - ja
 - ko
-base_model:
-- maitrix-org/Voila-base
-pipeline_tag: audio-to-audio
+library_name: transformers
+license: mit
+pipeline_tag: audio-text-to-text
 ---
 
 <p align="center">