Update license.rtf to only have major version (#8127)
Update license.rtf to only have major version (#8127)

Guidance is that we can just have the major version at the top "PowerShell 6" and not worry about updating the minor version with each release.  The change is on line 230.  Word made the other changes to the RTF.

daxian-dbw/PowerShell,PaulHigin/PowerShell,JamesWTruher/PowerShell-1,JamesWTruher/PowerShell-1,PaulHigin/PowerShell,JamesWTruher/PowerShell-1,TravisEz13/PowerShell,TravisEz13/PowerShell,TravisEz13/PowerShell,PaulHigin/PowerShell,JamesWTruher/PowerShell-1,TravisEz13/PowerShell,daxian-dbw/PowerShell,PaulHigin/PowerShell,daxian-dbw/PowerShell,daxian-dbw/PowerShell