The point is to remove anything after ...launcher.exe" from the commandline. The exact path to launcher.exe (the part where the dots are) depends on your language and version of Windows. (Yes, leave the quote if you have it.)
If you have a 32-bit version of Windows, there will not be any " (x86)" in your path. If you have a non-English version of Windows, then the folder may not be named "Program Files". All that matters is removing the part at the end.