Changed datamap endpoint from string to url

[parthmiglani-microsoft]

SDK configuration pull request

Purpose of this PR

Changing the endpoint for datamap from string to url, since tests are failing for sdk after fixing typing errors due to pyright version upgrade.
Ref: Azure/azure-sdk-for-python#39324 (review)

• Make changes to the SDK configuration only when there are no modifications to the API specification, eliminating the need for an ARM or Stewardship Board API review.

Due diligence checklist

To merge this PR, you must go through the following checklist and confirm you understood
and followed the instructions by checking all the boxes:

• I confirm this PR is modifying only SDK configurations, and not API related specifications.
• I have reviewed and used the respective tspconfig.yaml templates:
  • ARM tspconfig template
  • Data plane tspconfig template

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[openapi-pipeline-app]

Next Steps to Merge

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[openapi-pipeline-app]

Generated ApiView

Language	Package Name	ApiView Link
JavaScript	@azure-rest/purview-datamap	https://apiview.dev/Assemblies/Review/277e1d1cf90e4fad82c72870fb2b6635?revisionId=b41d3aec3e4946c0958bc248a8246475
Java	azure-analytics-purview-datamap	There is no API change compared with the previous version
.Net	Azure.Analytics.Purview.DataMap	There is no API change compared with the previous version
Python	azure-purview-datamap	https://apiview.dev/Assemblies/Review/88bce871a7c14e5ea77249c7ca663131?revisionId=865a437e883a40b6a2656bae467212be

[catalinaperalta]

@parthmiglani-microsoft you need to regenerate the openapi file before merging this pr in