nixpkgs/doc/glibc: better glibc link

also replace unicode symbol in case some environment cannot reproduce the
encoding or font symbol.

1 files changed, 3 insertions, 2 deletions

diff --git a/doc/builders/packages/etc-files.section.md b/doc/builders/packages/etc-files.section.md
index 0b837938359..2405a54634d 100644
--- a/doc/builders/packages/etc-files.section.md
+++ b/doc/builders/packages/etc-files.section.md
@@ -6,12 +6,13 @@ On non-NixOS distributions these files are typically provided by packages (i.e.
 
 If [iana-etc](https://hydra.nixos.org/job/nixos/trunk-combined/nixpkgs.iana-etc.x86_64-linux) is part of your _buildInputs_ then it will set the environment varaibles `NIX_ETC_PROTOCOLS` and `NIX_ETC_SERVICES` to the corresponding files in the package through a _setup-hook_.
 
+
 ```bash
-❯ nix-shell -p iana-etc
+> nix-shell -p iana-etc
 
 [nix-shell:~]$ env | grep NIX_ETC
 NIX_ETC_SERVICES=/nix/store/aj866hr8fad8flnggwdhrldm0g799ccz-iana-etc-20210225/etc/services
 NIX_ETC_PROTOCOLS=/nix/store/aj866hr8fad8flnggwdhrldm0g799ccz-iana-etc-20210225/etc/protocols
 ```
 
-Nixpkg's version of [glibc](https://hydra.nixos.org/job/nixos/trunk-combined/nixpkgs.glibc.x86_64-linux) has been patched to check for the existence of these environment variables. If the environment variable are *not set*, then it will attempt to find the files at the default location within _/etc_.
+Nixpkg's version of [glibc](https://github.com/NixOS/nixpkgs/blob/master/pkgs/development/libraries/glibc/default.nix) has been patched to check for the existence of these environment variables. If the environment variable are *not set*, then it will attempt to find the files at the default location within _/etc_.