Add link to binderhub environment for Python client example

[paoloredis]

Will make the link work once PR is approved

[github-actions]

Staging links:
https://redis.io/docs/staging/DOC-5356/develop/clients/redis-py/

[andy-stark-redis]

This is fine, so I'll approve but TBH, I think this is important enough to put the Binderhub link before the first example (maybe in a {{< note >}}?)

Also, going forward, maybe for the tabbed code examples we could have a new button or link in the example box itself? For example, here, we've got "Python Quickstart", etc, at the bottom of the example box - maybe we could have "Try in Binderhub" as well?

[mich-elle-luna]

Thank you! Just my $.02, I prefer to see the binderhub button badge, it can be inside the note I guess but I think it makes it harder to know what you are trying out for some reason (because what you are trying is outside the note).

[paoloredis]

I like the badge as well, but can't seem to get it to work properly inside a note. Maybe we can use it in the tabbed code examples as Andy suggested.