atom feed generator: Make IDs proper URLs (#2081)

devscripts/gh-pages/update-feed.py

@@ -1,23 +1,23 @@
 #!/usr/bin/env python3
 
 import datetime
-
+import io
+import json
 import textwrap
 
-import json
 
 atom_template = textwrap.dedent("""\
     <?xml version='1.0' encoding='utf-8'?>
     <atom:feed xmlns:atom="http://www.w3.org/2005/Atom">
         <atom:title>youtube-dl releases</atom:title>
-									<atom:id>youtube-dl-updates-feed</atom:id>
+        <atom:id>https://yt-dl.org/feed/youtube-dl-updates-feed</atom:id>
         <atom:updated>@TIMESTAMP@</atom:updated>
         @ENTRIES@
     </atom:feed>""")
 
 entry_template = textwrap.dedent("""
     <atom:entry>
-									<atom:id>youtube-dl-@VERSION@</atom:id>
+        <atom:id>https://yt-dl.org/feed/youtube-dl-updates-feed/youtube-dl-@VERSION@</atom:id>
         <atom:title>New version @VERSION@</atom:title>
         <atom:link href="http://rg3.github.io/youtube-dl" />
         <atom:content type="xhtml">
@@ -51,6 +51,6 @@ for v in versions:
 entries_str = textwrap.indent(''.join(entries), '\t')
 atom_template = atom_template.replace('@ENTRIES@', entries_str)
 
-with open('update/releases.atom','w',encoding='utf-8') as atom_file:
+with io.open('update/releases.atom', 'w', encoding='utf-8') as atom_file:
     atom_file.write(atom_template)