Fix README typo's

[blundell]

Just some small tweaks as I was reading through.

[CLAassistant]

All committers have signed the CLA.

[CLAassistant]

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[blundell]

First-time contributors need a maintainer to approve running workflows.

@digitalbuddha can you vouch for me ;-)

[digitalbuddha]

Sorry not a maintainer anymore @rharter is

[rharter]

Looks great, thanks, dude!

[blundell]

👋 np! good to e-see you :-)