Fixing to minor spelling errors in the radio form type

Author: Sgoettschkes

reference/forms/types/radio.rst

@@ -5,8 +5,8 @@ radio Field Type
 ================
 
 Creates a single radio button. If the radio button is selected, the field will
-be set to the specified value. Radio buttons cannot be unchecked - The value only
-changes when another radio button with the same gets checked.
+be set to the specified value. Radio buttons cannot be unchecked - the value only
+changes when another radio button with the same name gets checked.
 
 The ``radio`` type isn't usually used directly. More commonly it's used
 internally by other types such as :doc:`choice</reference/forms/types/choice>`.