Allow error_tracker_dashboard without parens (#33)

This is consistent with how other packages such as Phoenix LiveDashboard
or Oban work when mounting resources on the router.

Author: crbelaus

.formatter.exs

@@ -1,6 +1,10 @@
 # Used by "mix format"
+locals_without_parens = [error_tracker_dashboard: 1, error_tracker_dashboard: 2]
+
 [
   import_deps: [:ecto, :ecto_sql, :plug, :phoenix],
   inputs: ["{mix,.formatter,dev,dev.*}.exs", "{config,lib,test}/**/*.{heex,ex,exs}"],
-  plugins: [Phoenix.LiveView.HTMLFormatter]
+  plugins: [Phoenix.LiveView.HTMLFormatter],
+  locals_without_parens: locals_without_parens,
+  export: [locals_without_parens: locals_without_parens]
 ]

dev.exs

@@ -109,7 +109,7 @@ defmodule ErrorTrackerDevWeb.Router do
     get "/exit", ErrorTrackerDevWeb.PageController, :exit
 
     scope "/dev" do
-      error_tracker_dashboard("/errors")
+      error_tracker_dashboard "/errors"
     end
   end
 end