Removing token_endpoint_auth_method from auth0_client example

[willvedd]

🔧 Changes

As noted in #813, the token_endpoint_auth_method was incorrectly left in an auth0_client example when it had been removed from the resource in v1.0.0-beta.1. This removal is also mentioned in the migration guide.

This PR simply removes this property from the example and thus the docs.

📚 References

• Related migration guide section

📝 Checklist

• All new/changed/fixed functionality is covered by tests (or N/A)
• I have added documentation for all new/changed functionality (or N/A)

[codecov-commenter]

Codecov Report

Merging #822 (47219be) into v1 (47219be) will not change coverage.
The diff coverage is n/a.

❗ Current head 47219be differs from pull request most recent head 6514832. Consider uploading reports for the commit 6514832 to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##               v1     #822   +/-   ##
=======================================
  Coverage   89.88%   89.88%           
=======================================
  Files          99       99           
  Lines       13569    13569           
=======================================
  Hits        12197    12197           
  Misses        975      975           
  Partials      397      397