Removed ambiguity in matched pattern.

[AbhiAbzs]

Summary

The pattern for Sales*200?.xls filter string wasn't correct.

[rpetrusha]

Thank you, @AbhiAbzs, for contributing to the dotnet/dotnet-api-docs repo and adding clarity to the matched filenames. I thought that the formatting could be improved to make the text clearer still, so I've suggested some changes.

[rpetrusha]

My original suggested change appears to have been lost.

[rpetrusha]

Thank you for making the additional changes, @AbhiAbzs. We'll merge your PR now. Your changes should be live on docs.microsoft.com in the next day or two.