[wasm] Fix a typo in browser-bench wasm app (dotnet#104434)

Author: ilonatommy

src/mono/sample/wasm/browser-bench/String.cs

@@ -136,7 +136,7 @@ public class TextInfoToUpper : TextInfoMeasurement
 
         public class TextInfoToTitleCase : TextInfoMeasurement
         {
-            public override string Name => "TextInfo ToTileCase";
+            public override string Name => "TextInfo ToTitleCase";
             public override void RunStep() => textInfo.ToTitleCase(str);
         }