Update README.md

README.md

@@ -15,14 +15,14 @@ metrics:
 
 # Sunbird AI Text-to-Speech (TTS) model trained on Luganda text 
 
-## Text-to-Speech (TTS) with Tacotron2 trained on LJSpeech
+### Text-to-Speech (TTS) with Tacotron2 trained on LJSpeech
 
 This repository provides all the necessary tools for Text-to-Speech (TTS)  with SpeechBrain using a [Tacotron2](https://arxiv.org/abs/1712.05884) pretrained on [LJSpeech](https://keithito.com/LJ-Speech-Dataset/).
 
 The pre-trained model takes in input a short text and produces a spectrogram in output. One can get the final waveform by applying a vocoder (e.g., HiFIGAN) on top of the generated spectrogram.
 
 
-## Install SpeechBrain
+### Install SpeechBrain
 
 ```
 pip install speechbrain