update deprecated config options

conf.py

@@ -628,7 +628,7 @@ FAVICONS = (
 # 'Read more...' for the index page, if INDEX_TEASERS is True (translatable)
 INDEX_READ_MORE_LINK = '<p class="more"><a href="{link}">{read_more}…</a></p>'
 # 'Read more...' for the RSS_FEED, if RSS_TEASERS is True (translatable)
-RSS_READ_MORE_LINK = '<p><a href="{link}">{read_more}…</a> ({min_remaining_read})</p>'
+FEED_READ_MORE_LINK = '<p><a href="{link}">{read_more}…</a> ({min_remaining_read})</p>'
 
 # Append a URL query to the RSS_READ_MORE_LINK in Atom and RSS feeds. Advanced
 # option used for traffic source tracking.
@@ -638,7 +638,7 @@ RSS_READ_MORE_LINK = '<p><a href="{link}">{read_more}…</a> ({min_remaining_rea
 # {feedFormat}                  The name of the syndication format.
 # Example using replacement for use with Google Analytics:
 # "utm_source={feedRelUri}&utm_medium=nikola_feed&utm_campaign={feedFormat}_feed"
-RSS_LINKS_APPEND_QUERY = False
+FEED_LINKS_APPEND_QUERY = False
 
 # A HTML fragment describing the license, for the sidebar.
 # (translatable)