Fix alpine link in INSTALL.md
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		@@ -6,7 +6,7 @@ but compiling on Windows and macOS should be possible with the right tools.
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- [Packages](#packages)
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					- [Packages](#packages)
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  - [Linux](#linux)
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					  - [Linux](#linux)
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    - [Flatpak](#flatpak)
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					    - [Flatpak](#flatpak)
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    - [Alpine Linux / postmarketOS](#alpine-linux-postmarketOS)
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					    - [Alpine Linux / postmarketOS](#alpine-linux-postmarketos)
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    - [Arch Linux](#arch-linux)
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					    - [Arch Linux](#arch-linux)
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- [Manual installation](#manual-installation)
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					- [Manual installation](#manual-installation)
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  - [Environment variables](#environment-variables)
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					  - [Environment variables](#environment-variables)
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