Fix method for adding placholders in progressBar

The method is called setPlaceholderFormatterDefinition and not setPlaceholderFormatter
symfony · weaverryan · Sep 15, 2014 · Sep 6, 2014 · Sep 6, 2014 · Sep 6, 2014
commit fb0e79cfa21c733763855c8ca4486fe8503aa0b0
diff --git a/components/console/helpers/progressbar.rst b/components/console/helpers/progressbar.rst
@@ -289,7 +289,7 @@ display that are not available in the list of built-in placeholders, you can
 create your own. Let's see how you can create a ``remaining_steps`` placeholder
 that displays the number of remaining steps::

-    ProgressBar::setPlaceholderFormatter(
+    ProgressBar::setPlaceholderFormatterDefinition(
        '%remaining_steps%',
        function (ProgressBar $bar, OutputInterface $output) {
            return $bar->getMaxSteps() - $bar->getStep();