docs(guide): fix spaces

Closes #10539

Author: Olivier Giulieri

docs/content/guide/forms.ngdoc

@@ -131,7 +131,7 @@ A form is an instance of {@link form.FormController FormController}.
 The form instance can optionally be published into the scope using the `name` attribute.
 
 Similarly, an input control that has the {@link ng.directive:ngModel ngModel} directive holds an
-instance of {@link ngModel.NgModelController NgModelController}.Such a control instance
+instance of {@link ngModel.NgModelController NgModelController}. Such a control instance
 can be published as a property of the form instance using the `name` attribute on the input control.
 The name attribute specifies the name of the property on the form instance.
 
@@ -339,7 +339,7 @@ In the following example we create two directives:
       <div>
         Username:
         <input type="text" ng-model="name" name="name" username />{{name}}<br />
-        <span ng-show="form.name.$pending.username">Checking if this name is available ...</span>
+        <span ng-show="form.name.$pending.username">Checking if this name is available...</span>
         <span ng-show="form.name.$error.username">This username is already taken!</span>
       </div>