Revise AzureADAuthorizationEndpointUri values and tips

[paisvivekanand]

Updated authorization endpoint URIs for Exchange Online PowerShell environments and added a tip for using /organization.

[learn-build-service-prod]

Learn Build status updates of commit cce8927:

✅ Validation status: passed

File	Status	Preview URL	Details
exchange/exchange-ps/ExchangePowerShell/Connect-ExchangeOnline.md	✅Succeeded	View (exchange-ps)

For more details, please refer to the build report.

[github-actions]

@AkshayaPrakash-PM @lusassl-msft @mukeshHCW @Srividyavaranasi
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[learn-build-service-prod]

Learn Build status updates of commit ec3b9bc:

✅ Validation status: passed

File	Status	Preview URL	Details
exchange/exchange-ps/ExchangePowerShell/Connect-ExchangeOnline.md	✅Succeeded	View (exchange-ps)

For more details, please refer to the build report.

[chrisda]

@paisvivekanand, does this update also affect the AzureADAuthorizationEndpointUri parameter in Connect-IPPSSession?

[learn-build-service-prod]

Learn Build status updates of commit 8ac407f:

✅ Validation status: passed

File	Status	Preview URL	Details
exchange/exchange-ps/ExchangePowerShell/Connect-ExchangeOnline.md	✅Succeeded	View (exchange-ps)

For more details, please refer to the build report.