Fix "Run Avalonia instructions" so they point to ControlCatalog.Desktop sample.
Fix "Run Avalonia instructions" so they point to ControlCatalog.Desktop sample.

wieslawsoltes/Perspex,grokys/Perspex,wieslawsoltes/Perspex,SuperJMN/Avalonia,wieslawsoltes/Perspex,AvaloniaUI/Avalonia,Perspex/Perspex,jkoritzinsky/Avalonia,wieslawsoltes/Perspex,grokys/Perspex,SuperJMN/Avalonia,jkoritzinsky/Avalonia,susloparovdenis/Perspex,jkoritzinsky/Avalonia,SuperJMN/Avalonia,AvaloniaUI/Avalonia,AvaloniaUI/Avalonia,jkoritzinsky/Avalonia,AvaloniaUI/Avalonia,jkoritzinsky/Avalonia,SuperJMN/Avalonia,akrisiun/Perspex,susloparovdenis/Avalonia,MrDaedra/Avalonia,OronDF343/Avalonia,jkoritzinsky/Perspex,OronDF343/Avalonia,SuperJMN/Avalonia,jkoritzinsky/Avalonia,AvaloniaUI/Avalonia,wieslawsoltes/Perspex,susloparovdenis/Avalonia,wieslawsoltes/Perspex,AvaloniaUI/Avalonia,SuperJMN/Avalonia,Perspex/Perspex,AvaloniaUI/Avalonia,jazzay/Perspex,jkoritzinsky/Avalonia,wieslawsoltes/Perspex,susloparovdenis/Perspex,MrDaedra/Avalonia,SuperJMN/Avalonia