Incorrect metaphor

The skipFrames parameter of the StackTrace constructor states "The number of frames up the stack from which to start the trace." The stack metaphor is that of callers being *below* on the stack, so this should read, "The number of frames down the stack from which to start the trace."

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* ID: 363bc598-218c-069d-f6fd-b6183be915ae
* Version Independent ID: 8f8fc543-50bd-c7d9-2f74-dae0c1b0d5f4
* Content: [StackTrace Constructor (System.Diagnostics)](https://docs.microsoft.com/en-us/dotnet/api/system.diagnostics.stacktrace.-ctor?view=netframework-4.7.2#System_Diagnostics_StackTrace__ctor_System_Int32_)
* Content Source: [xml/System.Diagnostics/StackTrace.xml](https://github.com/dotnet/dotnet-api-docs/blob/master/xml/System.Diagnostics/StackTrace.xml)
* Product: **dotnet-api**
* GitHub Login: @dotnet-bot
* Microsoft Alias: **dotnetcontent**