Update favicon test

Author: apata

test/plausible_web/plugs/favicon_test.exs

@@ -145,7 +145,7 @@ defmodule PlausibleWeb.FaviconTest do
   end
 
   describe "Fallback to placeholder icon" do
-    @placholder_icon File.read!("priv/placeholder_favicon.ico")
+    @placeholder_icon File.read!("priv/placeholder_favicon.svg")
 
     test "falls back to placeholder when DDG returns a non-2xx response", %{plug_opts: plug_opts} do
       expect(
@@ -163,7 +163,7 @@ defmodule PlausibleWeb.FaviconTest do
 
       assert conn.halted
       assert conn.status == 200
-      assert conn.resp_body == @placholder_icon
+      assert conn.resp_body == @placeholder_icon
     end
 
     test "falls back to placeholder in case of a network error", %{plug_opts: plug_opts} do
@@ -181,7 +181,7 @@ defmodule PlausibleWeb.FaviconTest do
 
       assert conn.halted
       assert conn.status == 200
-      assert conn.resp_body == @placholder_icon
+      assert conn.resp_body == @placeholder_icon
     end
 
     test "falls back to placeholder when DDG returns a broken image response", %{
@@ -201,7 +201,7 @@ defmodule PlausibleWeb.FaviconTest do
 
       assert conn.halted
       assert conn.status == 200
-      assert conn.resp_body == @placholder_icon
+      assert conn.resp_body == @placeholder_icon
     end
   end
 end