Update readme.md

Author: egil

docs/readme.md

@@ -52,9 +52,9 @@ Examples are split into three sections, one for each style/declaration type.
 
 1. [C# tests](csharp-examples.md)  
    Examples of tests written entirely in C#.
-2. [Razor test component tests](razor-examples.md)  
+2. [Razor test component tests](razor-examples.md) (experimental)
    Examples of tests written in Razor files using Razor code to declare/arrange the component under test and expected HTML, and C# code for driving the test.
-3. [Snapshot tests](snapshot-examples.md)  
+3. [Snapshot tests](snapshot-examples.md) (experimental)
    Examples of snapshot tests written in Razor code, where the component under test and expected output is declared in Razor syntax and automatically verified.
 
 ## References