Example fixes for New-AzureRmStorageAccount.

[twitchax]

Description

A customer reported that the examples do not work because they use US West as a location parameter, which is not valid (should be West US or westus).

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