[dotnet] Adjust test to utilize correct exception when authenticator …

…was removed

examples/dotnet/SeleniumDocs/Interactions/VirtualAuthenticatorTest.cs

@@ -86,7 +86,7 @@ public void ShouldBeAbleToRemoveAuthenticator()
             ((WebDriver)driver).RemoveVirtualAuthenticator(virtualAuthenticatorId);
 
             // Since the authenticator was removed, any operation using it will throw an error
-            Assert.ThrowsException<WebDriverArgumentException>(() => ((WebDriver)driver).GetCredentials());
+            Assert.ThrowsException<InvalidOperationException>(() => ((WebDriver)driver).GetCredentials());
         }
 
         [TestMethod]