Updating examples for BGP service communities

[ganesr]

Description

Updates example for Get-AzureRmBGPServiceCommunity.

Checklist

• I have read the Submitting Changes section of CONTRIBUTING.md
• The title of the PR is clear and informative
• The appropriate change log has been updated
• The PR does not introduce breaking changes
• If applicable, the changes made in the PR have proper test coverage
• For public API changes to cmdlets:
  • the changes have gone through a cmdlet design review
  • the cmdlet markdown files were generated using the platyPS module

[ganesr]

@markjbrown Please let me know if this looks good. If it does, I will do the same for the others.

[cormacpayne]

@ganesr please remove this space added at the top of the file

[cormacpayne]

@ganesr would you be able to add the corresponding output (or a snippet of it if it's too big) from this cmdlet execution in this code block?

[ganesr]

@cormacpayne please review updates per your comments.

[cormacpayne]

@markjbrown these changes look good to me. I can merge the PR whenever you sign off as well.

[markjbrown]

These look good.

@cormacpayne do these need to get merged into Master for them to be reflected in PS help and docs?

[cormacpayne]

@markjbrown we release out of the preview branch, so once this PR gets merged, it will get picked up for the next release and will be reflected on https://docs.microsoft.com when the module is published on May 22nd