fix(cable): fix channels channel (#992)

## 📺 PR Description

#991

## Checklist

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- [x] my commits **and PR title** follow the [conventional
commits](https://www.conventionalcommits.org/en/v1.0.0/#summary) format
- [ ] if this is a new feature, I have added tests to consolidate the
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- [ ] if this is a bug fix, I have added a test that reproduces the bug
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Author: rudenkornk

cable/unix/channels.toml

@@ -7,7 +7,8 @@ requirements = ["tv", "bat"]
 command = ["tv list-channels"]
 
 [preview]
-command = "bat -pn --color always ${XDG_CONFIG_HOME:-$HOME/.config}/television/cable/**/{}.toml"
+command = "bat -pn --color always ${TELEVISION_CONFIG:-${XDG_CONFIG_HOME:-$HOME/.config}/television}/cable/{}.toml"
+shell = "bash"
 
 [keybindings]
 enter = "actions:channel-enter"