Suggestion: string.Format without arguments

Since the `string.Format` method allows for an arbitrary number of format arguments it also accepts 0. However in case one provides zero arguments this is likely a mistake:

string.Format("some-text here")

->

"some-text here"

The code is not really identical, so I'm not sure if it's generally useful.

For example `string.Format` removes double curly braces `string.Format("{{0}}") == "{0}"` and throws on *any* placeholder `string.Format("{0}") == new FormatException`, but in most cases a `string.Format` without arguments is likely an oversight or a downright bug.