Update clean-install.md

[WatskeBart]

Typo

[codecov-io]

Current coverage is 99.49%

Merging #131 into v1.1.2 will not change coverage

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  Methods           0          0          
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  Hits           1955       1955          
  Misses            5          5          
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[dennissiemensma]

Thanks for the fix, the file was merely a internal note how to setup an empty installation, but it should be correct anyway. :]

I will try to merge this to the dev branch later.

[dennissiemensma]

Thanks, merged manually in 7ff08ef to dev branch, which will be pushed back as a bundle in the upcoming master release.