Starting example is not runnable (uses track method instead of update)

[gboeer]

The example code on the very first page is not runnable because it uses function names which are outdated (I guess).

In particular, there is no track() function, instead the function should be called update().

Update:
I just saw that this is only true for the github pages documentation:

https://adipandas.github.io/multi-object-tracker/includeme/readmefile.html?highlight=ioutracker#

[adipandas]

@gboeer Fixed the docs. Thanks!