add missing public methods for Zend\Form\Element\Element
Merge branch 'fix/745'
Close #745

* fix/745:
  Fixed a typo, enforceScheme -> enforcedScheme
  Add docs on missing UriNormalize filter
Merge branch 'master' of https://github.com/zendframework/zf2-documentation

* 'master' of https://github.com/zendframework/zf2-documentation:
  Syntax tidy up
  unified use of __construct-or
  try to be more clear with the custom form elements
  fix php errors in examples
  fix indentation
Merge branch 'hotfix/#732'
Merge branch 'master' of https://github.com/zendframework/zf2-documentation
Merge branch 'fix/zend-form-element' of https://github.com/robertbasic/zf2-documentation into hotfix/#748
fixed typo
Merge branch 'hotfix/#748' into develop