Update section about command not found

README.md

@@ -54,11 +54,12 @@ rustlings init
 ```
 
 <details>
-<summary><strong>If the command `rustlings` can't be found…</strong> (<em>click to expand</em>)</summary>
+<summary><strong>If the command <code>rustlings</code> can't be found…</strong> (<em>click to expand</em>)</summary>
 
-Cargo installs binaries to the directory `~/.cargo/bin`.
 You are probably using Linux and installed Rust using your package manager.
-Sadly, these package managers often don't add `~/.cargo/bin` to your `PATH` environment variable.
+
+Cargo installs binaries to the directory `~/.cargo/bin`.
+Sadly, package managers often don't add `~/.cargo/bin` to your `PATH` environment variable.
 The solution is to either add it manually or to uninstall Rust from the package manager and isntall it using the official way with `rustup`:
 https://www.rust-lang.org/tools/install