Use a more specific link

Author: bbatsov

README.md

@@ -97,7 +97,7 @@ Those keymap prefixes are just a suggestion. Feel free to put there whatever wor
 
 Enable `projectile-mode`, open a file in one of your projects and type a command such as <kbd>C-c p f</kbd>.
 
-See the [online documentation](https://docs.projectile.mx) for more details.
+See the [online documentation](https://docs.projectile.mx/projectile/usage.html) for more details.
 
 To get the most of Projectile you also need to enable (and potentially install)
 some minibuffer completion framework (e.g. `ido`, `ivy` or `vertico`). See