readme.md: The double `git clone git clone`

[Galacticai]

Hey I noticed there's a small typo that might confuse linux newcomers

in Manual section step 2

git clone git clone https://github.com/Audio4Linux/gst-plugin-viperfx    

which probably should be

git clone https://github.com/Audio4Linux/gst-plugin-viperfx    

[Noah Bliss]

Oh geez you're right! Nice catch.

[Noah Bliss]

Fixed this with 2ca20c2

Thanks so much!