Drop IRB out of the web-console Gemfile comment

We don't provide exactly the same experience as IRB does, so let's not
advertize it like that. We can say that it's an interactive console,
without further references. I have also followed byebug's comment and
changed the calling `console` part. Hopefully, this can hint that the
invocation is not view specific and you can use it like the debugger
statement.

[ci skip]

railties/lib/rails/generators/rails/app/templates/Gemfile

@@ -37,7 +37,7 @@ end
 
 group :development do
 <%- unless options.api? -%>
-  # Access an IRB console on exception pages or by using <%%= console %> anywhere in the code.
+  # Access an interactive console on exception pages or by calling 'console' anywhere in the code.
   <%- if options.dev? || options.edge? -%>
   gem 'web-console', github: 'rails/web-console'
   <%- else -%>