Update transcription processing state: next_index=0, count=0

processing_state_transcriptions.json

@@ -17,7 +17,7 @@
     "audio/0005_Focusing_attention_and_guiding_the_user.wav": "failed",
     "audio/0006_Creating_emotion_and_showcasing_personality_and_brand.wav": "failed",
     "audio/0007_Informing_and_giving_feedback_to_the_user.wav": "failed",
-    "audio/0008_Timing_easing_and_offset.wav": "processing"
+    "audio/0008_Timing_easing_and_offset.wav": "failed"
   },
   "transcription_count": 0
 }