[Trivial change] Docs CI are passing but ReadTheDocs badge fails (#700)

[Trivial change]  Docs CI are passing but ReadTheDocs badge fails

Author: LexiconCode

docs/README.md

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 # Caster
-[![Travis Build Status](https://travis-ci.org/dictation-toolbox/Caster.svg?branch=master)](https://travis-ci.org/dictation-toolbox/Caster) [![ReadTheDocs Build Status](https://readthedocs.org/projects/pip/badge/)](https://caster.readthedocs.io/en/latest/)
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+[![Travis Build Status](https://travis-ci.org/dictation-toolbox/Caster.svg?branch=master)](https://travis-ci.org/dictation-toolbox/Caster) [![Documentation Status](https://readthedocs.org/projects/caster/badge/?version=latest)](https://caster.readthedocs.io/en/latest/?badge=latest)
 [Caster](https://github.com/dictation-toolbox/Caster)  is a collection of tools aimed at enabling programming and accessibility entirely by voice built upon the [Dragonfly](https://github.com/dictation-toolbox/dragonfly) API.
 
 **Note for PyPi Users**: The PIP package is (_Alpha_). Do not use the PIP install. Alternatively use this [Master Branch](https://github.com/dictation-toolbox/Caster) with classic install for the best feature experience.