Update README.md

[gmf-uah]

Fixed the 'unpacked extension' link and revised wording for clarity

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[oliverdunk]

Let us know once you've signed the CLA and we can take a look at this. Thanks!

[gmf-uah]

Hi there,

I signed the CLA a few days ago as of writing. Thank you for the response :) I hope my changes are helpful, even if minor.

[oliverdunk]

Hi @gmf-uah - thanks for your contribution, and apologies for taking so long to get back to you after you signed the CLA. At the moment, I'm not sure that this is very different to the existing wording and so I would be inclined to close it. Were there specific goals you had in making this change?

[gmf-uah]

Hey @oliverdunk, thank you for getting back to me 🙂

My main goal was to fix this broken link:

Some of the wording also felt clunky, so I made some revisions. Looking back at it today, my first revision also feels awkward, so I revised it again. Primarily though this pull request is to fix the link with the missing right parenthesis.

Best wishes,
Grant

[oliverdunk]

Got it - the new draft looks good. Thanks again!