Fix code examples

| Q             | A
| ------------- | ---
| Doc fix?      | yes
| New docs?     | no
| Applies to    | 2.6
| Fixed tickets |

Author: ifdattic

components/console/helpers/debug_formatter.rst

@@ -51,8 +51,8 @@ display information that the program is started::
 
     $output->writeln($debugFormatter->start(
         spl_object_hash($process),
-        'Some process description')
-    );
+        'Some process description'
+    ));
 
     $process->run();
 
@@ -68,7 +68,7 @@ You can tweak the prefix using the third argument::
         spl_object_hash($process),
         'Some process description',
         'STARTED'
-    );
+    ));
     // will output:
     //  STARTED Some process description