Fix indentation

Author: lajosthiel

components/serializer.rst

@@ -899,12 +899,12 @@ Option                  Description                                           De
                         flattening
 ``csv_headers``         Sets the order of the header and data columns
                         E.g.: $this->serializer->serialize(
-                            ['c' => 3,'a' => 1,'b' => 2],
-                            'csv',
-                            ['csv_headers' => ['a', 'b', 'c']]);
+                        ['c' => 3,'a' => 1,'b' => 2],
+                        'csv',
+                        ['csv_headers' => ['a', 'b', 'c']]);
                         returns
-                            a,b,c
-                            1,2,3                                             ``[]``, inferred from input data's keys
+                        a,b,c
+                        1,2,3                                                 ``[]``, inferred from input data's keys
 ``csv_escape_formulas`` Escapes fields containg formulas by prepending them   ``false``
                         with a ``\t`` character
 ``as_collection``       Always returns results as a collection, even if only