Merge pull request rails#53562 from skellock/patch-1

Modernizing Old Dad Jokes

Author: skipkayhil

guides/source/testing.md

@@ -1395,7 +1395,7 @@ test "ajax request" do
 end
 ```
 
-### The Three Hashes of the Apocalypse
+### The Three Hashketeers!
 
 After a request has been made and processed, you will have 3 Hash objects ready for use:
 
@@ -1449,7 +1449,7 @@ get articles_url, headers: { "HTTP_REFERER": "http://example.com/home" } # simul
 
 ### Testing `flash` Notices
 
-If you remember from earlier, one of the Three Hashes of the Apocalypse was `flash`.
+If you remember from earlier, one of the Three Hashketeers was `flash`.
 
 We want to add a `flash` message to our blog application whenever someone
 successfully creates a new Article.