Updating an incorrect description for uploadsizebytes

[realschwa]

Latest improvements:

MSFT employees can try out our new experience at OpenAPI Hub - one location for using our validation tools and finding your workflow.

Contribution checklist:

• I have reviewed the documentation for the workflow.
• Validation tools were run on swagger spec(s) and have all been fixed in this PR.
• The OpenAPI Hub was used for checking validation status and next steps.

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• Service team MUST add the "WaitForARMFeedback" label if the management plane API changes fall into one of the below categories.
• adding/removing APIs.
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Failure to comply may result in delays for manifest application. Note this does not apply to data plane APIs.

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[openapi-sdkautomation]

In Testing, Please Ignore

[Logs] (Generated from 9421fb0, Iteration 1)

.NET: test-repo-billy/azure-sdk-for-net [Logs]

• Package generation in progress.

Python: test-repo-billy/azure-sdk-for-python [Logs]

• Package generation in progress.

Java: test-repo-billy/azure-sdk-for-java [Logs]

• Package generation in progress.

JavaScript: test-repo-billy/azure-sdk-for-js [Logs]

• Package generation in progress.

Go: test-repo-billy/azure-sdk-for-go [Logs]

• Package generation in progress.

Ruby: test-repo-billy/azure-sdk-for-ruby [Logs] [Diff]

• Package generation in progress.

[AutorestCI]

Automation for azure-sdk-for-python

The initial PR has been merged into your service PR:
Azure/azure-sdk-for-python#6897

[azuresdkci]

Can one of the admins verify this patch?

[AutorestCI]

Automation for azure-sdk-for-go

The initial PR has been merged into your service PR:
Azure/azure-sdk-for-go#5597

[hyonholee]

@yungezz Could you merge this PR?