Source Zendesk Support: Delete unused field and update links to dec

[girarda]

What

• Delete the parent field since it's not used since 🐛 Source Zendesk Support: refactor TicketComments stream #11237
• Update doc URL for Users streams

[girarda]

/test connector=connectors/source-zendesk-support

🕑 connectors/source-zendesk-support https://github.com/airbytehq/airbyte/actions/runs/2080400277
✅ connectors/source-zendesk-support https://github.com/airbytehq/airbyte/actions/runs/2080400277
Python tests coverage:

Name                                                 Stmts   Miss  Cover
------------------------------------------------------------------------
source_acceptance_test/utils/__init__.py                 6      0   100%
source_acceptance_test/tests/__init__.py                 4      0   100%
source_acceptance_test/__init__.py                       2      0   100%
source_acceptance_test/tests/test_full_refresh.py       52      2    96%
source_acceptance_test/utils/asserts.py                 37      2    95%
source_acceptance_test/config.py                        74      6    92%
source_acceptance_test/utils/json_schema_helper.py     105     13    88%
source_acceptance_test/utils/common.py                  70     17    76%
source_acceptance_test/utils/compare.py                 62     23    63%
source_acceptance_test/tests/test_core.py              275    106    61%
source_acceptance_test/base.py                          10      4    60%
source_acceptance_test/utils/connector_runner.py       110     48    56%
source_acceptance_test/tests/test_incremental.py        69     38    45%
------------------------------------------------------------------------
TOTAL                                                  876    259    70%
Name                                 Stmts   Miss  Cover
--------------------------------------------------------
source_zendesk_support/__init__.py       2      0   100%
source_zendesk_support/streams.py      290     57    80%
source_zendesk_support/source.py        45     25    44%
--------------------------------------------------------
TOTAL                                  337     82    76%

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (master@e9946c9). Click here to learn what that means.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master   #11671   +/-   ##
=========================================
  Coverage          ?   75.66%           
=========================================
  Files             ?        3           
  Lines             ?      337           
  Branches          ?        0           
=========================================
  Hits              ?      255           
  Misses            ?       82           
  Partials          ?        0           

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[sherifnada]

LGTM but make sure to add a comment in the PR description for posterity