Work around an issue with site.webmanifest

The error when this line is uncommented is:

> The asset "favicon/site.webmanifest" is not present in the asset pipeline.

I have tried the suggestions on this issue to no avail: RealFaviconGenerator/rails_real_favicon#35

app/views/application/_favicon.html.erb

@@ -3,7 +3,7 @@
 <link rel="icon" type="image/png" sizes="194x194" href="<%= asset_path('favicon/favicon-194x194.png') %>">
 <link rel="icon" type="image/png" sizes="192x192" href="<%= asset_path('favicon/android-chrome-192x192.png') %>">
 <link rel="icon" type="image/png" sizes="16x16" href="<%= asset_path('favicon/favicon-16x16.png') %>">
-<link rel="manifest" href="<%= asset_path('favicon/site.webmanifest') %>">
+<%# <link rel="manifest" href="<%= asset_path('favicon/site.webmanifest') %>"> %>
 <link rel="mask-icon" href="<%= asset_path('favicon/safari-pinned-tab.svg') %>" color="#292b30">
 <link rel="shortcut icon" href="<%= asset_path('favicon/favicon.ico') %>">
 <meta name="apple-mobile-web-app-title" content="Splits.io">