[AutoPR sql/resource-manager] Refactor sql readme.md

[AutorestCI]

Created to sync Azure/azure-rest-api-specs#2640

[AutorestCI]

(message created by the CI based on PR content)

Installation instruction

Package azure-mgmt-sql

You can install the package azure-mgmt-sql of this PR using the following command:
pip install "git+https://github.com/Azure/azure-sdk-for-python@restapi_auto_2640#egg=azure-mgmt-sql&subdirectory=azure-mgmt-sql"

You can build a wheel to distribute for test using the following command:
pip wheel --no-deps "git+https://github.com/Azure/azure-sdk-for-python@restapi_auto_2640#egg=azure-mgmt-sql&subdirectory=azure-mgmt-sql"

If you have a local clone of this repository, you can also do:

• git checkout restapi_auto_2640
• pip install -e ./azure-mgmt-sql

Or build a wheel file to distribute for testing:

• git checkout restapi_auto_2640
• pip wheel --no-deps ./azure-mgmt-sql

Direct download

Your files can be directly downloaded here:

• azure-mgmt-sql-0.9.0.zip
• azure_mgmt_sql-0.9.0-py2.py3-none-any.whl

[codecov-io]

Codecov Report

❗ No coverage uploaded for pull request base (restapi_auto_sql/resource-manager@15357ff). Click here to learn what that means.
The diff coverage is 35.97%.

@@                         Coverage Diff                          @@
##             restapi_auto_sql/resource-manager    #2154   +/-   ##
====================================================================
  Coverage                                     ?   53.02%           
====================================================================
  Files                                        ?     4784           
  Lines                                        ?   120281           
  Branches                                     ?        0           
====================================================================
  Hits                                         ?    63778           
  Misses                                       ?    56503           
  Partials                                     ?        0

Impacted Files	Coverage Δ
...re-mgmt-sql/azure/mgmt/sql/models/restore_point.py	45.45% <0%> (ø)
...mt-sql/azure/mgmt/sql/models/database_operation.py	25% <0%> (ø)
azure-mgmt-sql/azure/mgmt/sql/models/__init__.py	100% <100%> (ø)
...ure-mgmt-sql/azure/mgmt/sql/operations/__init__.py	100% <100%> (ø)
azure-mgmt-sql/azure/mgmt/sql/version.py	100% <100%> (ø)
...l/azure/mgmt/sql/operations/database_operations.py	32.65% <100%> (ø)
...e-mgmt-sql/azure/mgmt/sql/sql_management_client.py	100% <100%> (ø)
...ure/mgmt/sql/models/sql_management_client_enums.py	100% <100%> (ø)
...e/mgmt/sql/operations/restore_points_operations.py	21.49% <13.51%> (ø)
...ql/azure/mgmt/sql/models/elastic_pool_operation.py	25% <25%> (ø)
... and 3 more

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