Update description of teams export scripts

[ideaman007]

Is your feature request related to a problem? Please describe.
No.

Describe the solution you'd like
I just want the description of the scripts to include the fact that it does not export any binary data/files from the teams channels, it instead provides a graph API link to any binary files, which may or may not be helpful, since the data might not be available via graph API at a later time/date, which wouldn't be ideal of someone assumed the export originally included files some how when it was exported.