fix: devshell message in the readme

Author: deemp

README.md

@@ -75,20 +75,17 @@ When running `nix-shell` or `nix develop`, `mkShell` prints a welcome message:
 
 [[general commands]]
 
-  hello         - prints hello
-  menu          - prints this menu
+  menu              - prints this menu
 
-[formatters]
+[packages]
 
-  nixpkgs-fmt   - Nix code formatter for nixpkgs
+  diffutils-3.10    - Commands for showing the differences between files (diff, cmp, etc.)
+  goreleaser-1.23.0 - Deliver Go binaries as fast and easily as possible
 
-[linters]
+[scripts]
 
-  golangci-lint - golang linter
-
-[utilites]
-
-  hub           - github utility
+  nix run .#bench   - Run benchmark
+  nix run .#docs    - Run mdBook server at http://localhost:3000
 
 [devshell]$ 
 ```