Making clearer to the reader that the actual installation command should

point to the correct repo for the chosen libc implementation, this helps
eliminate the possibility of a wrong system installation.

Author: kz6wk9

src/installation/guides/fde.md

@@ -126,11 +126,15 @@ Before we enter the chroot to finish up configuration, we do the actual install.
 keys](../../xbps/troubleshooting/common-issues.md#verifying-rsa-keys) for the
 packages you are installing.
 
+It should be noted that the next command need to be issued in accordance with
+your chosen libc implementation, if musl libc, the link should be directed to:
+`current/musl`, if GNU libc, it should be directed to: `current`.
+
 ```
-# xbps-install -Sy -R https://alpha.de.repo.voidlinux.org/current -r /mnt base-system lvm2 cryptsetup grub
-[*] Updating `https://alpha.de.repo.voidlinux.org/current/x86_64-repodata' ...
+# xbps-install -Sy -R https://alpha.de.repo.voidlinux.org/<libc_implementation_repo> -r /mnt base-system lvm2 cryptsetup grub
+[*] Updating `https://alpha.de.repo.voidlinux.org/<libc_implementation_repo>/x86_64-repodata' ...
 x86_64-repodata: 1661KB [avg rate: 2257KB/s]
-`https://alpha.de.repo.voidlinux.org/current' repository has been RSA signed by "Void Linux"
+`https://alpha.de.repo.voidlinux.org/<libc_implementation_repo>' repository has been RSA signed by "Void Linux"
 Fingerprint: 60:ae:0c:d6:f0:95:17:80:bc:93:46:7a:89:af:a3:2d
 Do you want to import this public key? [Y/n] y
 130 packages will be downloaded:
@@ -141,7 +145,7 @@ UEFI systems will have a slightly different package selection. The installation
 command for a UEFI system will be as follows.
 
 ```
-# xbps-install -Sy -R https://alpha.de.repo.voidlinux.org/current -r /mnt base-system cryptsetup grub-x86_64-efi lvm2
+# xbps-install -Sy -R https://alpha.de.repo.voidlinux.org/<libc_implementation_repo> -r /mnt base-system cryptsetup grub-x86_64-efi lvm2
 ```
 
 When it's done, we can enter the `chroot` and finish up the configuration.