Update readme

README.md

@@ -5,7 +5,7 @@
 [![CodeQL](https://github.com/hakavlad/tird/actions/workflows/github-code-scanning/codeql/badge.svg)](https://github.com/hakavlad/tird/actions/workflows/github-code-scanning/codeql)
 [![Releases](https://img.shields.io/github/v/release/hakavlad/tird?label=Release)](https://github.com/hakavlad/tird/releases)
 [![PyPI](https://img.shields.io/pypi/v/tird?color=008080&label=PyPI)](https://pypi.org/project/tird/)
-[![Tutorial](https://img.shields.io/badge/%F0%9F%93%96-Tutorial-808)](https://github.com/hakavlad/tird/tree/main/docs/tutorial#tutorial)
+[![Tutorial](https://img.shields.io/badge/%F0%9F%93%96-Tutorial-808)](https://github.com/hakavlad/tird/blob/main/docs/tutorial/README.md)
 
 `tird` *(an acronym for "this is random data")* is a tool for writing random bytes, encrypting file contents, and hiding encrypted data.
 
@@ -102,9 +102,9 @@ Enabling debug messages additionally shows:
 - salts, passphrases, digests, keys, nonces, tags;
 - some other info.
 
-## Tutorial with examples
+## Tutorial
 
-See here: [docs/tutorial](https://github.com/hakavlad/tird/tree/main/docs/tutorial).
+See [here](https://github.com/hakavlad/tird/blob/main/docs/tutorial/README.md).
 
 ## Requirements