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Multi-GPU: Replace ~ with $HOME (#593)

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pages/Configuring/Multi-GPU.md
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@ -64,26 +64,29 @@ required. wlroots will set `WLR_DRM_DEVICES` to the integrated GPU by default.
If instead you would like to use another GPU, you must first create a symlink to
the card from the previous section.
It is not possible to use `~/.config/hypr/card` as wlroots will not expand it correctly.
You must include full path e.g `$HOME/.config/hypr/card`
```
ln -sf /dev/dri/pci-0000:06:00.0-card ~/.config/hypr/card
ln -sf /dev/dri/by-path/pci-0000:06:00.0-card $HOME/.config/hypr/card
```
It is not possible to directly use the `/dev/dri/pci-0000:06:00.0-card` path,
It is not possible to directly use the `/dev/dri/by-path/pci-0000:06:00.0-card` path,
as wlroots interprets the colon symbols in the path as separators. Escaping
characters will not rectify this.
Afterwards, you must set the `WLR_DRM_DEVICES` environment variable in
hyprland.conf to this linked card.
```ini
env = WLR_DRM_DEVICES,~/.config/hypr/card
env = WLR_DRM_DEVICES,$HOME/.config/hypr/card
```
If you want to set a sequence of fallback cards, symlink another card and set
the var as a colon separated list in order of priority.
```ini
env = WLR_DRM_DEVICES,~/.config/hypr/card:~/.config/hypr/otherCard
env = WLR_DRM_DEVICES,$HOME/.config/hypr/card:$HOME/.config/hypr/otherCard
```
Here, we tell Hyprland to set priorities. If `card` isn't available for