Fix revise integration instructions

[dpinol]

According to https://github.com/wookay/Jive.jl/blob/master/docs/src/watch.md, the revise example must be executed with julia --project=.. -q -i revise.jl example but I verified that it needs to be executed as in CI

1. Previously running Pkg.develop (this is not mentioned in the readme)
2. with --project=. (not ..) so that it gets the Jive dependency

thanks

[wookay]

thanks. I added these line.

julia -e 'using Pkg; pkg"dev Revise .."'

[dpinol]

fixed