Per PR discussion

- clean up "the the" in XML comments
- simplify refactoring VS did when I renamed `GetHtmlHelperForViewData()`
 - fix existing issue in `HtmlHelperCheckboxTest.CheckBoxReplacesUnderscoresInHtmlAttributesWithDashes()`
   (was using a `HtmlHelper<ViewDataDictionary<TestModel>>`)

src/Microsoft.AspNet.Mvc.Core/Rendering/Html/HtmlHelper.cs

@@ -616,8 +616,8 @@ namespace Microsoft.AspNet.Mvc.Rendering
         }
 
         /// <summary>
-        /// Renders a &lt;form&gt; start tag to the response. When the user submits the form, the
+        /// Renders a &lt;form&gt; start tag to the response. When the user submits the form, the action with name
-        /// the action with name <paramref name="actionName"/> will process the request.
+        /// <paramref name="actionName"/> will process the request.
         /// </summary>
         /// <param name="actionName">The name of the action method.</param>
         /// <param name="controllerName">The name of the controller.</param>

src/Microsoft.AspNet.Mvc.Core/Rendering/IHtmlHelper.cs

@@ -82,8 +82,8 @@ namespace Microsoft.AspNet.Mvc.Rendering
         HtmlString AntiForgeryToken();
 
         /// <summary>
-        /// Renders a &lt;form&gt; start tag to the response. When the user submits the form, the
+        /// Renders a &lt;form&gt; start tag to the response. When the user submits the form, the action with name
-        /// the action with name <paramref name="actionName"/> will process the request.
+        /// <paramref name="actionName"/> will process the request.
         /// </summary>
         /// <param name="actionName">The name of the action method.</param>
         /// <param name="controllerName">The name of the controller.</param>

test/Microsoft.AspNet.Mvc.Core.Test/Rendering/HtmlHelperCheckboxTest.cs

@@ -132,7 +132,7 @@ namespace Microsoft.AspNet.Mvc.Rendering
             var expected = @"<input checked=""checked"" id=""Property1"" name=""Property1"" " +
                            @"Property1-Property3=""Property3ObjValue"" type=""checkbox"" value=""true"" /><input " +
                            @"name=""Property1"" type=""hidden"" value=""false"" />";
-            var helper = DefaultTemplatesUtilities.GetHtmlHelper<ViewDataDictionary<TestModel>>(GetTestModelViewData());
+            var helper = DefaultTemplatesUtilities.GetHtmlHelper(GetTestModelViewData());
             var htmlAttributes = new { Property1_Property3 = "Property3ObjValue" };
 
             // Act

test/Microsoft.AspNet.Mvc.Core.Test/Rendering/HtmlHelperDisplayNameExtensionsTest.cs

@@ -21,7 +21,7 @@ namespace Microsoft.AspNet.Mvc.Core
             // Arrange
             var helper = DefaultTemplatesUtilities.GetHtmlHelper();
             var enumerableHelper =
-                DefaultTemplatesUtilities.GetHtmlHelper<IEnumerable<DefaultTemplatesUtilities.ObjectTemplateModel>>((IEnumerable<DefaultTemplatesUtilities.ObjectTemplateModel>)null);
+                DefaultTemplatesUtilities.GetHtmlHelper<IEnumerable<DefaultTemplatesUtilities.ObjectTemplateModel>>(model: null);
 
             // Act
             var displayNameResult = helper.DisplayName(expression: string.Empty);
@@ -44,7 +44,7 @@ namespace Microsoft.AspNet.Mvc.Core
             // Arrange
             var helper = DefaultTemplatesUtilities.GetHtmlHelper();
             var enumerableHelper =
-                DefaultTemplatesUtilities.GetHtmlHelper<IEnumerable<DefaultTemplatesUtilities.ObjectTemplateModel>>((IEnumerable<DefaultTemplatesUtilities.ObjectTemplateModel>)null);
+                DefaultTemplatesUtilities.GetHtmlHelper<IEnumerable<DefaultTemplatesUtilities.ObjectTemplateModel>>(model: null);
 
             // Act
             var displayNameResult = helper.DisplayName("Property1");
@@ -92,7 +92,7 @@ namespace Microsoft.AspNet.Mvc.Core
             var helper = DefaultTemplatesUtilities.GetHtmlHelper();
             helper.ViewData.ModelMetadata = metadata;
             var enumerableHelper =
-                DefaultTemplatesUtilities.GetHtmlHelper<IEnumerable<DefaultTemplatesUtilities.ObjectTemplateModel>>((IEnumerable<DefaultTemplatesUtilities.ObjectTemplateModel>)null);
+                DefaultTemplatesUtilities.GetHtmlHelper<IEnumerable<DefaultTemplatesUtilities.ObjectTemplateModel>>(model: null);
             enumerableHelper.ViewData.ModelMetadata = metadata;
 
             // Act
@@ -149,7 +149,7 @@ namespace Microsoft.AspNet.Mvc.Core
             var helper = DefaultTemplatesUtilities.GetHtmlHelper();
             helper.ViewData.ModelMetadata.DisplayName = displayName;
             var enumerableHelper =
-                DefaultTemplatesUtilities.GetHtmlHelper<IEnumerable<DefaultTemplatesUtilities.ObjectTemplateModel>>((IEnumerable<DefaultTemplatesUtilities.ObjectTemplateModel>)null);
+                DefaultTemplatesUtilities.GetHtmlHelper<IEnumerable<DefaultTemplatesUtilities.ObjectTemplateModel>>(model: null);
             enumerableHelper.ViewData.ModelMetadata.DisplayName = displayName;
 
             // Act
@@ -255,7 +255,7 @@ namespace Microsoft.AspNet.Mvc.Core
         {
             // Arrange
             var helper =
-                DefaultTemplatesUtilities.GetHtmlHelper<IEnumerable<DefaultTemplatesUtilities.ObjectTemplateModel>>((IEnumerable<DefaultTemplatesUtilities.ObjectTemplateModel>)null);
+                DefaultTemplatesUtilities.GetHtmlHelper<IEnumerable<DefaultTemplatesUtilities.ObjectTemplateModel>>(model: null);
 
             // Act & Assert
             var exception = Assert.Throws<InvalidOperationException>(
@@ -285,7 +285,7 @@ namespace Microsoft.AspNet.Mvc.Core
             // Arrange
             var unknownKey = "this is a dummy parameter value";
             var helper =
-                DefaultTemplatesUtilities.GetHtmlHelper<IEnumerable<DefaultTemplatesUtilities.ObjectTemplateModel>>((IEnumerable<DefaultTemplatesUtilities.ObjectTemplateModel>)null);
+                DefaultTemplatesUtilities.GetHtmlHelper<IEnumerable<DefaultTemplatesUtilities.ObjectTemplateModel>>(model: null);
 
             // Act
             var result = helper.DisplayNameFor(model => unknownKey);