Merge branch '4.4' into 5.0

* 4.4:
  minor. refs #13027
  Fix example with iterable

Author: OskarStark

components/console/helpers/progressbar.rst

@@ -105,13 +105,19 @@ which starts, advances and finishes the progress bar automatically::
 
     $progressBar = new ProgressBar($output);
 
-    // $iterable can be for example an array ([1, 2, 3, ...]) or a generator
-    // $iterable = function () { yield 1; yield 2; ... };
+    // $iterable can be array
+    $iterable = [1, 2];
     foreach ($progressBar->iterate($iterable) as $value) {
         // ... do some work
     }
 
-If ``$iterable = [1, 2]``, the previous code will output the following:
+    // or a generator
+    function iterable() { yield 1; yield 2; ... };
+    foreach ($progressBar->iterate(iterable()) as $value) {
+        // ... do some work
+    }
+
+The previous code will output:
 
 .. code-block:: text