Checkboxes decorator had misspelled schema-validate directive. Fixed typo.

Author: jbsaff

src/directives/decorators/bootstrap/checkboxes.html

@@ -9,7 +9,7 @@
              sf-changed="form"
              class="{{form.fieldHtmlClass}}"
              ng-model="titleMapValues[$index]"
-             schema-vaidate="form"
+             schema-validate="form"
              name="{{form.key.slice(-1)[0]}}">
       <span ng-bind-html="form.titleMap[$index].name"></span>
     </label>