linux: rename "Particl Desktop" binary to particl-desktop

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Describe the bug After a rpm installation on a clean and virgin fedora 29 & 31 VM on Qubes it is not possible to start Particl Desktop from the qemu launcher.

To Reproduce

Steps to reproduce the behavior:

1. install fedora VM on Qubes
2. download particl-desktop-2.3.2-linux-x86_64.rpm
3. sudo dnf install particl-desktop-2.3.2-linux-x86_64.rpm
4. no error & application starts for the first time
5. stop the vm
6. start the vm from the QEMU launcher
7. which particl-desktop -> fails. Executable is named "Particl Desktop" and located in "/opt/Particl Desktop/" 5.5 which Particl Desktop -> fails 5.5.1 which "Particl Desktop" works

The problem is the naming in the first place

Calling an application from the commandline with a space in it and being forced to call it with paranthesis around it is to me very uncommon. The pure renaming cures that.

Versions (please complete the following information):

• OS: Fedora 29 & 31 x64 on Qubes

WORKAROUND opening the app from the terminal with /opt/Particl\ Desktop/Particl\ Desktop