Update docs/install.md

Co-authored-by: kenjis <kenji.uui@gmail.com>

Author: datamweb

docs/install.md

@@ -146,7 +146,7 @@ These can be used in any of the [normal filter config settings](https://codeigni
 
 ### Protect All Pages
 
-If you want to limit all routes (e.g. `localhost:8080/admin`, `localhost:8080/panel` and ...), you need to add the following code in the `app\Config\Filters.php` file.
+If you want to limit all routes (e.g. `localhost:8080/admin`, `localhost:8080/panel` and ...), you need to add the following code in the `app/Config/Filters.php` file.
 
 ```php
 public $globals = [