Docs: Add link do disambiguate table

[spacemanspiff2007]

Currently there are many places in the docs where the disambiguate parameter is described. It would be very helpful if there was a direct link to this table so one can look up the meanings of the parameters quickly: https://whenever.readthedocs.io/en/latest/overview.html#ambiguity-in-timezones

E.g. a link in the description of https://whenever.readthedocs.io/en/latest/api.html#whenever.LocalDateTime.assume_tz If that's not possible a section on the left under changelog would also be fine.

[ariebovenberg]

@spacemanspiff2007 agree, that would be a good idea. I can include it in the next release—along with some other documentation improvements

[ariebovenberg]

The next release should make an improvement in this regard

before:

after:

@spacemanspiff2007 what do you think?

[ariebovenberg]

release 0.6.10 is out with these improvements