`Installing ChipWhisperer` link in Readme is dead.

[SimonLammer]

The Installing ChipWhisperer link in the Getting Started section of the readme appears to be dead:

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           ]         NNN         [
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         /           q,            \
        /                           \

[alex-dewar]

Thanks for the report on this. I've fixed the links in README. Additionally, https://chipwhisperer.readthedocs.io/en/latest/installing.html now exists and has a link to the correct page.