fix for speech noise suppression doc (#2820)

* add section for speech noise suppression model

* capitalize letters

Author: vladimir-dudnik

models/intel/index.md

@@ -299,6 +299,8 @@ Deep Learning models for speech synthesis (mel spectrogram generation and wave f
 |   text-to-speech-en-multi-0001-regression                          | 7.81  | 5.12  |
 |   text-to-speech-en-multi-0001-generation                          | 48.38 | 12.77 |
 
+## Speech Noise Suppression
+
 Deep Learning models for noise suppression.
 
 | Model Name                                                                          | Complexity (GFLOPs)  | Size (Mp)  |