fix typo

Co-authored-by: Hugo Alliaume <hugo@alliau.me>

Author: smnandre

src/Icons/src/DependencyInjection/UXIconsExtension.php

@@ -94,7 +94,7 @@ public function getConfigTreeBuilder(): TreeBuilder
                             ->defaultTrue()
                         ->end()
                         ->scalarNode('endpoint')
-                            ->info('The endpoint for the iconify icons API.')
+                            ->info('The endpoint for the Iconify icons API.')
                             ->defaultValue(Iconify::API_ENDPOINT)
                             ->cannotBeEmpty()
                         ->end()