extend.rst typo

[dschiller]

Possible typo at https://virtualenv.pypa.io/en/latest/extend.html#activation-scripts

If you want add an activator for a new shell you can do this by implementing a new activator.
They must be registered under > > > and < < < entry point with key virtualenv.activate , and the
class must implement [virtualenv.activation.activator.Activator]
(https://virtualenv.pypa.io/en/latest/extend.html#virtualenv.activation.activator.Activator):

[sagardesai1]

Hi, I would like to pick this up!

[gaborbernat]

Go ahead.