<DRAFT PR> Added documentation to support servicenow click to dial

[AmardeepKumar1205]

Description

• Added documentation to setup service now click to dial

Checklist

Please ensure that you have completed the following tasks before submitting this pull request:

• I have updated the documentation or README if necessary.
• My code follows the project's coding style guidelines.
• My changes are self reviewed

Screenshots (if applicable)

If your changes include UI/UX modifications or additions, please include relevant screenshots here.

Additional Notes

None

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