Coding style inconsistency: namespace imports - Fix (#32975)
Coding style inconsistency: namespace imports - Fix (#32975)

* Coding style inconsistency: namespace imports - Fix

A fix for the issues mentioned in [#32277](https://github.com/dotnet/corefx/issues/32277) regarding the sorting of `System.*` namespaces.
@danmosemsft

* Tweaking description of vssettings and spelling

Removed unnecessary version-specific language regarding VS (and .vssettings) and correcting an (unrelated) spelling mistake

wtgodbe/corefx,ericstj/corefx,ptoonen/corefx,ericstj/corefx,ptoonen/corefx,mmitche/corefx,BrennanConroy/corefx,ViktorHofer/corefx,wtgodbe/corefx,shimingsg/corefx,mmitche/corefx,wtgodbe/corefx,shimingsg/corefx,ericstj/corefx,ViktorHofer/corefx,ViktorHofer/corefx,ericstj/corefx,ericstj/corefx,mmitche/corefx,shimingsg/corefx,ericstj/corefx,mmitche/corefx,shimingsg/corefx,wtgodbe/corefx,shimingsg/corefx,BrennanConroy/corefx,shimingsg/corefx,ptoonen/corefx,ericstj/corefx,ViktorHofer/corefx,ptoonen/corefx,wtgodbe/corefx,ViktorHofer/corefx,mmitche/corefx,ptoonen/corefx,mmitche/corefx,BrennanConroy/corefx,wtgodbe/corefx,ptoonen/corefx,shimingsg/corefx,mmitche/corefx,wtgodbe/corefx,ViktorHofer/corefx,ViktorHofer/corefx,ptoonen/corefx