update example config

data/config.example.yaml

@@ -1,20 +1,20 @@
-command_prefix: "!"
+command_prefix: '!'
 
 matrix:
   # The full Matrix user ID of the bot account, @name:host
-  user_id: "@example:matrix.example.org"
-  password: "You'll never guess my super secret example password!"
+  user_id: '@example:matrix.example.org'
+  password: 'You''ll never guess my super secret example password!'
   # The URL of the homeserver to connect to.
-  homeserver_url: https://matrix.example.org
+  homeserver_url: 'https://matrix.example.org'
   # Optional, the session name for this bot instance, for identification only.
   # session_name: 'bot on toast'
   # The display name for the bot, used in chat rooms.
-  nick_name: HotDogBot
+  nick_name: 'HotDogBot'
 
 storage:
   # The path to a directory for internal bot storage
   # containing encryption keys, sync tokens, etc.
-  store_path: "/data/store"
+  store_path: '/data/store'
 
 # Location info, optionally per room.
 # This information can be used for language selection & formatting.
@@ -41,10 +41,13 @@ feeder:
   storage: '/data/feeder.sqlite'
   feeds: []
     # examplefeed:
-    #   display: Example RSS Feed
-    #   url: https://www.example.org/feeds/rss.xml
+    #   display: 'Example RSS Feed'
+    #   url: 'https://www.example.org/feeds/rss.xml'
     #   rooms: ['!roomid:matrix.example.org']
     #   max_content_len: 666
+    #   filter:
+    #     title: 'Special'
+    #   update_every: 'PT3H20M'
 
 # Optional, development settings.
 dev: