Update New-AzureStorageAccountSASToken.md to make hyperlink clickable

[andikrueger]

Description

There was a blank missing. The link for more details on "Constructing an Account" was not clickable.

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

[azuresdkci]

Can one of the admins verify this patch?

[cormacpayne]

@andikrueger Hey Andi, thanks for this fix 😀

[cormacpayne]

@azuresdkci add to whitelist