Dictation docs. WIP

Author: luval-microsoft

Documentation/Input/Dictation.md

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 # Dictation
 
-The dication service allows users to record audio clips and, via Windows Speech services, obtain a transcription of the audio.
+Dictation allows users to record audio clips and obtain a transcription of the audio. To use it make sure that a dication data provider is registered in the *Input System Profile*. **Windows Dictation Input Provider** is the dication service provided out of the box but alternative dictation systems can be created implementing [`IMixedRealityDictationSystem`](xref:Microsoft.MixedReality.Toolkit.Input.IMixedRealityDictationSystem).
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+<img src="../../External/ReadMeImages/Input/DictationDataProvider.png" style="max-width:100%;">
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