Fixing tests after renaming KVCB Exception types.

Author: StephenMolloy

test/Microsoft.Configuration.ConfigurationBuilders.Test/TestHelper.cs

@@ -17,8 +17,8 @@ public class TestHelper
 
         static TestHelper()
         {
-            kvWrapperType = typeof(KeyValueConfigBuilder).Assembly.GetType("Microsoft.Configuration.ConfigurationBuilders.KeyValueConfigWrappedException");
-            kvExceptionType = typeof(KeyValueConfigBuilder).Assembly.GetType("Microsoft.Configuration.ConfigurationBuilders.KeyValueConfigException");
+            kvWrapperType = typeof(KeyValueConfigBuilder).Assembly.GetType("Microsoft.Configuration.ConfigurationBuilders.KeyValueConfigurationErrorsException");
+            kvExceptionType = typeof(KeyValueConfigBuilder).Assembly.GetType("Microsoft.Configuration.ConfigurationBuilders.KeyValueConfigBuilderException");
             ensureInitialized = typeof(KeyValueConfigBuilder).GetMethod("EnsureInitialized", BindingFlags.NonPublic | BindingFlags.Instance);
         }