Fix typo

[eltociear]

successfull→successful

[opbld32]

Docs Build status updates of commit df2f515:

:warning: Validation status: warnings

File	Status	Preview URL	Details
index.md	:warning:Warning		Details
docs-ref-conceptual/operationsmanager/index.md	:warning:Warning		Details
docs-ref-autogen/operationsmanager/Authentication/Login.yml	:white_check_mark:Succeeded

index.md

• Line 9, Column 10: [Warning-ms-prod-technology-invalid] Invalid value for 'ms.prod': 'system-center-2016'.

docs-ref-conceptual/operationsmanager/index.md

• Line 9, Column 10: [Warning-ms-prod-technology-invalid] Invalid value for 'ms.prod': 'system-center-2016'.

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[MGoedtel]

@eltociear - thank you for your contribution to the content hosted in this repo. Because this content is generated following our automated swagger process, I'm going to file a bug in our DevOps so that the developer updates the file and republishes the fixed yaml file following that internal process.