[FIX] remove .git from the binder url

[jdkent]

Summary

Fixes #166 .

List of changes proposed in this PR (pull-request)

• removes .git from binder link as suggested by this comment

[codecov]

Codecov Report

Merging #175 into master will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff           @@
##           master    #175   +/-   ##
======================================
  Coverage    71.2%   71.2%           
======================================
  Files          18      18           
  Lines         823     823           
  Branches      119     119           
======================================
  Hits          586     586           
  Misses        190     190           
  Partials       47      47

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