Update Plausible script (#62)

Author: ericmj

lib/hexdocs/file_rewriter.ex

@@ -5,7 +5,7 @@ defmodule Hexdocs.FileRewriter do
   @link_hooks [@link_hook1, @link_hook2]
 
   @analytics_hook ~s|</head>|
-  @analytics_addition ~s|<script async defer data-domain="${DOMAIN}" src="https://stats.${DOMAIN}/js/script.js" onerror="console.warn('failed to load:', this.src)"></script>|
+  @analytics_addition "<script async defer src=\"https://s.${DOMAIN}/js/script.js\"></script><script>window.plausible=window.plausible||function(){(plausible.q=plausible.q||[]).push(arguments)},plausible.init=plausible.init||function(i){plausible.o=i||{}};plausible.init({endpoint:\"https://s.${DOMAIN}/api/event\"})</script>"
 
   @noindex_hook ~s|<meta name="robots" content="noindex">|
 

test/hexdocs/file_rewriter_test.exs

@@ -5,8 +5,8 @@ defmodule Hexdocs.FileRewriterTest do
   test "run/1" do
     assert FileRewriter.run("index.html", "") == ""
 
-    assert FileRewriter.run("index.html", "</head>") =~
-             ~s|<script async defer data-domain="localhost" src="https://stats.localhost/js/script.js"|
+    assert FileRewriter.run("index.html", "</head>") ==
+             "<script async defer src=\"https://s.localhost/js/script.js\"></script><script>window.plausible=window.plausible||function(){(plausible.q=plausible.q||[]).push(arguments)},plausible.init=plausible.init||function(i){plausible.o=i||{}};plausible.init({endpoint:\"https://s.localhost/api/event\"})</script></head>"
 
     assert FileRewriter.run(
              "index.html",