Update create-upload-ubuntu.md

[mitchcr]

Removing the hash symbol at the beginning of the command's lines as customers are copying the commands and they're executing them with paste, which makes them execute them as comments, no errors, also nothing happens to the VMs.

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@mitchcr : Thanks for your contribution! The author(s) have been notified to review your proposed change.

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Learn Build status updates of commit 6df3fee:

:white_check_mark: Validation status: passed

File	Status	Preview URL	Details
articles/virtual-machines/linux/create-upload-ubuntu.md	:white_check_mark:Succeeded

For more details, please refer to the build report.

Note: Broken links written as relative paths are included in the above build report. For broken links written as absolute paths or external URLs, see the broken link report.

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PRMerger Results

Issue	Description
File Change Percent	This PR contains file(s) with more than 20% file change.

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@mitchcr : Thanks for your contribution! The author(s) have been notified to review your proposed change.

[Court72]

@srijang

Can you review the proposed changes?

When the changes are ready for publication, add a #sign-off comment to signal that the PR is ready for the review team to merge.

#label:"aq-pr-triaged" @MicrosoftDocs/public-repo-pr-review-team

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@mitchcr : Thanks for your contribution! The author(s) have been notified to review your proposed change.

[kazantakapici]

• [ ] ~~heh6wg~~

[srijang]

#sign-off

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@mitchcr : Thanks for your contribution! The author(s) have been notified to review your proposed change.