docs(input): replace dateTimeLocal by datetime-local

Fixes angular#9856
Closes angular#9870

Author: jnizet

src/ng/directive/input.js

@@ -200,7 +200,7 @@ var inputType = {
 
    /**
     * @ngdoc input
-    * @name input[dateTimeLocal]
+    * @name input[datetime-local]
     *
     * @description
     * Input with datetime validation and transformation. In browsers that do not yet support
@@ -2290,7 +2290,7 @@ var NgModelController = ['$scope', '$exceptionHandler', '$attrs', '$element', '$
  *    - {@link input[email] email}
  *    - {@link input[url] url}
  *    - {@link input[date] date}
- *    - {@link input[dateTimeLocal] dateTimeLocal}
+ *    - {@link input[datetime-local] datetime-local}
  *    - {@link input[time] time}
  *    - {@link input[month] month}
  *    - {@link input[week] week}