Fix hardcoded :dedent: values in azure-search-documents docstrings

[Copilot]

APIView flagged 64 comments on hardcoded numerical :dedent: 4 values in Sphinx literalinclude directives across docstring examples — these should use empty :dedent: to allow auto-detection instead of locking to a specific indentation level.

Changes

Replaced :dedent: 4 → :dedent: in 19 locations across three _patch.py files:

• azure/search/documents/_operations/_patch.py (9): upload_documents, delete_documents, merge_documents, merge_or_upload_documents, search (×3), autocomplete, suggest
• azure/search/documents/aio/_operations/_patch.py (9): async equivalents of the above
• azure/search/documents/indexes/_operations/_patch.py (1): get_indexer_names

Before:

.. literalinclude:: ../samples/sample_documents_crud.py
    :start-after: [START upload_document]
    :end-before: [END upload_document]
    :language: python
    :dedent: 4
    :caption: Upload new documents to an index

After:

.. literalinclude:: ../samples/sample_documents_crud.py
    :start-after: [START upload_document]
    :end-before: [END upload_document]
    :language: python
    :dedent:
    :caption: Upload new documents to an index

APIView URL: https://spa.apiview.dev/review/e8d301b10edf4b29b346a87fa4905ea6?activeApiRevisionId=7234ecb987b64bc689d16969085cc7d1

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