Rename Treenumerator -> TreeEnumerator

src/Microsoft.AspNetCore.Routing/Matchers/TreeMatcher.cs

@@ -67,7 +67,7 @@ namespace Microsoft.AspNetCore.Routing.Matchers
                 var tree = cache[i];
                 var tokenizer = new PathTokenizer(httpContext.Request.Path);
 
-                var treenumerator = new Treenumerator(tree.Root, tokenizer);
+                var treenumerator = new TreeEnumerator(tree.Root, tokenizer);
 
                 while (treenumerator.MoveNext())
                 {

src/Microsoft.AspNetCore.Routing/Tree/TreeEnumerator.cs

@@ -8,12 +8,12 @@ using Microsoft.AspNetCore.Routing.Internal;
 
 namespace Microsoft.AspNetCore.Routing.Tree
 {
-    internal struct Treenumerator : IEnumerator<UrlMatchingNode>
+    internal struct TreeEnumerator : IEnumerator<UrlMatchingNode>
     {
         private readonly Stack<UrlMatchingNode> _stack;
         private readonly PathTokenizer _tokenizer;
 
-        public Treenumerator(UrlMatchingNode root, PathTokenizer tokenizer)
+        public TreeEnumerator(UrlMatchingNode root, PathTokenizer tokenizer)
         {
             _stack = new Stack<UrlMatchingNode>();
             _tokenizer = tokenizer;

src/Microsoft.AspNetCore.Routing/Tree/TreeRouter.cs

@@ -177,7 +177,7 @@ namespace Microsoft.AspNetCore.Routing.Tree
                 var tokenizer = new PathTokenizer(context.HttpContext.Request.Path);
                 var root = tree.Root;
 
-                var treeEnumerator = new Treenumerator(root, tokenizer);
+                var treeEnumerator = new TreeEnumerator(root, tokenizer);
 
                 // Create a snapshot before processing the route. We'll restore this snapshot before running each
                 // to restore the state. This is likely an "empty" snapshot, which doesn't allocate.