Fix Appimage unable to start issue

**Describe the bug**
When using Appimage, it will appear "usr/local/bin/runappimge ./AppRun not found" notification.

**To Reproduce**
Steps to reproduce the behavior:
1. Click the 'Appimage file'
2. See error "usr/local/bin/runappimge ./AppRun not found"

**Expected behavior**
Run a appimage.

**Screenshots**

**Version (please complete the following information):**
- Live ISO and installed
- FreeBSD version 12.2
- helloSystem build https://github.com/helloSystem/ISO/releases/tag/experimental-12.2
- Running in a virtual machine: no

**Computer (please complete the following information):**
- Device: Acer Aspire 3810T

**Additional context**
no.