Updating documentation

Lombiq.Tests.UI.Samples/Tests/BasicVisualVerificationTests.cs

@@ -26,6 +26,8 @@ public BasicVisualVerificationTests(ITestOutputHelper testOutputHelper)
     // the Chrome version 67 and 68 in the image rendering. This caused that the rendered image looked similar, but
     // comparing pixel-by-pixel was different. You can investigate this or similar failure using the captured and
     // generated diff images under the path FailureDumps/<test-name>/Attempt <n>/DebugInformation/VisualVerification.
+    // To update your baseline images after making changes to a visually checked element, remove the previous images
+    // and run the test with maxRetryCount set to 0.
     [Fact]
     public Task VerifyBlogImage() =>
         ExecuteTestAfterSetupAsync(

Lombiq.Tests.UI/Exceptions/VisualVerificationBaselineImageNotFoundException.cs

@@ -22,5 +22,5 @@ private static string GetExceptionMessage(string path, int maxRetryCount) =>
             + " file will be asserted against and the assertion will pass (unless the display of the app changed in the"
             + " meantime)."
         : $"Baseline image file was not found under the path {path} and maxRetryCount is set to "
-            + $"{maxRetryCount.ToTechnicalString()}, so it won't be generated.";
+            + $"{maxRetryCount.ToTechnicalString()}, so it won't be generated. Set maxRetryCount to 0 to generate images.";
 }