Update example

Author: javiereguiluz

components/string.rst

@@ -314,8 +314,8 @@ Methods to Pad and Trim
     u('template.html.twig')->trimSuffix('.twig');            // 'template.html'
     u('template.html.twig')->trimSuffix('.html.twig');       // 'template'
     // when passing an array of prefix/sufix, only the first one found is trimmed
-    u('file-image-0001.png')->trimPrefix(['file', 'file-']); // '-image-0001.png'
-    u('template.html.twig')->trimSuffix(['.twig', '.html']); // 'template.html'
+    u('file-image-0001.png')->trimPrefix(['file-', 'image-']); // 'image-0001.png'
+    u('template.html.twig')->trimSuffix(['.twig', '.html']);   // 'template.html'
 
 .. versionadded:: 5.4