> My suggestion is to merge PowerShell-core to PowerShell-6.0. In the official repository, both names are being used interchangeably, in the reference documentation, Powershell 6 seems to be the preferred variant.

In my opinion, we should just delete `PowerShell-Core`, and keep it `PowerShell-6.0` which matches `PowerShell-5.0`.  This would match tags like Visual Studio, C# (at SO), Office, Windows.  We can use a tag description within 6.0/6.1 to indicate it's also called `PowerShell Core 6.x`.

In any event, only a single question has used the tags in question, so we could simply edit that single question and remove the erroneous tag that was created. 
 
We could then make `PowerShell Core 6.x` a synonym with `PowerShell-6.0`, although the same would have to be done with `PowerShell-6.1` and `PowerShell Core 6.x`, so I think simply removing `PowerShell Core 6.0` might be the better option.

**A tag merger seems a little overkill for a tag that has been used once.**  `PowerShell-6.0`is the tag that has had a description written for it, a single person, erroneously created the `PowerShell Core 6.0` tag.  It has no description currently.