add minlength and maxlength version

source/import_documentation/Components/Solid-Form.rst

@@ -129,11 +129,15 @@ Attributes
 
 ``maxlength-[field]``
 ~~~~~~~~~~~~~~~~~~~~~
+   *Available from version 0.16*
+
    Add this attribute for the field ``[field]`` to define the maximum number of characters that can be typed.
    It works only with ``<input type="text">``, ``solid-form-email`` or ``solid-form-password`` and ``solid-form-textarea`` widgets.
 
 ``minlength-[field]``
 ~~~~~~~~~~~~~~~~~~~~~
+   *Available from version 0.16*
+
    Add this attribute for the field ``[field]`` to define the minimum number of characters that can be typed.
    It works only with ``<input type="text">``, ``solid-form-email`` or ``solid-form-password`` and ``solid-form-textarea`` widgets.