Merge pull request #79473 from wamserma/modules-wireguard-fix-doc-typo

modules/wireguard: fix typo in documentation

nixos/modules/services/networking/wireguard.nix

···
       publicKey = mkOption {
         example = "xTIBA5rboUvnH4htodjb6e697QjLERt1NAB4mZqp8Dg=";
         type = types.str;
-        description = "The base64 public key the peer.";
+        description = "The base64 public key of the peer.";
       };
 
       presharedKey = mkOption {