Corrects spelling of some comments

src/Microsoft.AspNetCore.Blazor.Razor.Extensions/BindLoweringPass.cs

@@ -22,7 +22,7 @@ namespace Microsoft.AspNetCore.Blazor.Razor
                 return;
             }
 
-            // For each bind *usage* we need to rewrite the tag helper node to map to basic contstructs.
+            // For each bind *usage* we need to rewrite the tag helper node to map to basic constructs.
             var nodes = documentNode.FindDescendantNodes<TagHelperIntermediateNode>();
             for (var i = 0; i < nodes.Count; i++)
             {
@@ -322,7 +322,7 @@ namespace Microsoft.AspNetCore.Blazor.Razor
                 return false;
             }
 
-            // The the tag helper specifies attribute names, they should win.
+            // The tag helper specifies attribute names, they should win.
             //
             // This handles cases like <input type="text" bind="@Foo" /> where the tag helper is 
             // generated to match a specific tag and has metadata that identify the attributes.

src/Microsoft.AspNetCore.Blazor.Razor.Extensions/BindTagHelperDescriptorProvider.cs

@@ -52,13 +52,13 @@ namespace Microsoft.AspNetCore.Blazor.Razor
             //
             //      We don't do any transformation or inference for this case, because the developer has
             //      told us exactly what to do. This is the *full* form of bind, and should support any
-            //      combination of elemement, component, and attributes.
+            //      combination of element, component, and attributes.
             //
             //      This is the most general case, and is implemented with a built-in tag helper that applies
             //      to everything, and binds to a dictionary of attributes that start with bind-.
             //
             //  2.  We also support cases like 'bind-value="@FirstName"' where we will generate the 'value'
-            //      attribute and and another attribute based for a changed handler based on the metadata.
+            //      attribute and another attribute based for a changed handler based on the metadata.
             //
             //     These mappings are provided by attributes that tell us what attributes, suffixes, and
             //      elements to map.

src/Microsoft.AspNetCore.Blazor.Razor.Extensions/BlazorDesignTimeNodeWriter.cs

@@ -410,7 +410,7 @@ namespace Microsoft.AspNetCore.Blazor.Razor
             // We also limit component attributes to simple cases. However there is still a lot of complexity
             // to handle here, since there are a few different cases for how an attribute might be structured.
             //
-            // This rougly follows the design of the runtime writer for simplicity.
+            // This roughly follows the design of the runtime writer for simplicity.
             if (node.AttributeStructure == AttributeStructure.Minimized)
             {
                 // Do nothing

src/Microsoft.AspNetCore.Blazor.Razor.Extensions/BlazorMetadata.cs

@@ -3,7 +3,7 @@
 
 namespace Microsoft.AspNetCore.Blazor.Razor
 {
-    // Metadata used for Blazor's interations with the tag helper system
+    // Metadata used for Blazor's interactions with the tag helper system
     internal static class BlazorMetadata
     {
         // There's a bug in the 15.7 preview 1 Razor that prevents 'Kind' from being serialized

src/Microsoft.AspNetCore.Blazor.Razor.Extensions/OrphanTagHelperLoweringPass.cs

@@ -269,7 +269,7 @@ namespace Microsoft.AspNetCore.Blazor.Razor
             {
                 base.VisitTagHelper(node);
 
-                // Use a post-order traversal because we're going to rewite tag helper nodes, and thus
+                // Use a post-order traversal because we're going to rewrite tag helper nodes, and thus
                 // change the parent nodes.
                 //
                 // This ensures that we operate the leaf nodes first.