docs: fixed typo

Author: jota

docs/insights/README.md

@@ -156,11 +156,11 @@ For example, to remove "Unused Parameters" Insight only for some file:
     ],
 ```
 
-<Badge text="^2.0"/> For insights that come from PHP-CS-Fixer and implements `WhitespacesAwareFixerInterface`, you can also configure the indentation to respect: 
+<Badge text="^2.0"/> For insights that come from PHP-CS-Fixer and implements `WhitespacesAwareFixerInterface`, you can also configure the indentation to respect:
 
 ```php
     'configure' => [
-        \PhpCsFixer\Fixer\Basic\BraceFixer::class => [
+        \PhpCsFixer\Fixer\Basic\BracesFixer::class => [
             'indent' => '  ',
 		],
     ],