fix readme

python/audio2text-input/README.md

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 This Sequence demonstrates how to turn voice data into summaries with <a href="https://www.assemblyai.com/" target="_blank">AssemblyAI</a> Speech models. Audio is sent to Scramjet Transform Hub using data streaming with an audio transcript as an output.
 
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+### Requirements
 
-Requirements<br/>
----
 For this Sequence to run properly on your Linux machine use the following command to start <a href="https://docs.scramjet.org/transform-hub/installation" target="_blank">STH</a>.
 
 ```bash