try to override `openssl` too

nixos/openssl-111k.nix

-self: super: {
+self: super: rec {
   openssl_1_1 = super.openssl_1_1.overrideAttrs (old: {
     version = "1.1.1k";
     sha256 = "1whinyw402z3b9xlb3qaxv4b9sk4w1bgh9k0y8df1z4x3yy92fhz";
     withDocs = false;
   });
+
+  openssl = openssl_1_1;
 }