More safe url fixes

Author: Rosuavio

Microsoft.Toolkit.Uwp.SampleApp/SamplePages/samples.json

@@ -780,10 +780,10 @@
         "Type": "DispatcherQueueHelperPage",
         "Subcategory": "Developer",
         "About": "Allows easy interaction with Windows Runtime message dispatcher queue for multi-threaded scenario (I.E: Run code on UI thread).",
-        "CodeUrl": "https://github.com/windows-toolkit/WindowsCommunityToolkit/blob/master/Microsoft.Toolkit.Uwp/Helpers/DispatcherQueueHelper.cs",
+        "CodeUrl": "https://github.com/windows-toolkit/WindowsCommunityToolkit/blob/master/Microsoft.Toolkit.Uwp/Extensions/DispatcherQueueExtensions.cs",
         "CodeFile": "DispatcherQueueHelperCode.bind",
         "Icon": "/Assets/Helpers.png",
-        "DocumentationUrl": "https://raw.githubusercontent.com/MicrosoftDocs/WindowsCommunityToolkitDocs/master/docs/helpers/DispatcherQueueHelper.md"
+        "DocumentationUrl": "https://raw.githubusercontent.com/MicrosoftDocs/WindowsCommunityToolkitDocs/master/docs/extensions/DispatcherQueueExtensions.md"
       },
       {
         "Name": "AdvancedCollectionView",
@@ -1249,15 +1249,16 @@
         "Name": "IconExtensions",
         "Type": "IconExtensionsPage",
         "About": "Markup extensions to easily create various types of icons.",
-        "CodeUrl": "https://github.com/windows-toolkit/WindowsCommunityToolkit/tree/master/Microsoft.Toolkit.Uwp.UI/Extensions/Markup/FontIconExtension",
+        "CodeUrl": "https://github.com/windows-toolkit/WindowsCommunityToolkit/tree/master/Microsoft.Toolkit.Uwp.UI/Extensions/Markup",
         "XamlCodeFile": "IconExtensionsXaml.bind",
         "Icon": "/Assets/Helpers.png",
-        "DocumentationUrl": "https://raw.githubusercontent.com/MicrosoftDocs/WindowsCommunityToolkitDocs/master/docs/extensions/IconExtensions.md"
+        "DocumentationUrl": "https://raw.githubusercontent.com/MicrosoftDocs/WindowsCommunityToolkitDocs/master/docs/extensions/IconMarkupExtensions.md"
       },
       {
         "Name": "EnumValuesExtension",
         "Type": "EnumValuesExtensionPage",
         "About": "The EnumValuesExtension markup extension allows you to easily retrieve a collection of all values from an enum type.",
+        "CodeUrl" : "https://github.com/windows-toolkit/WindowsCommunityToolkit/blob/master/Microsoft.Toolkit.Uwp.UI/Extensions/Markup/EnumValuesExtension.cs",
         "Icon": "/Assets/Helpers.png",
         "XamlCodeFile": "EnumValuesExtensionXaml.bind",
         "CodeFile": "EnumValuesExtensionCode.bind"