Fix misspelled words in config.sample.yaml

config/config.sample.yaml

-# This is a sample of the config file showing all avaliable options.
+# This is a sample of the config file showing all available options.
 # Where possible we have documented what they do, and all values are the
 # default values.
 
 bridge:
   # Domain part of the bridge, e.g. matrix.org
   domain: "localhost"
-  # This should be your publically facing URL because Discord may use it to
+  # This should be your publicly-facing URL because Discord may use it to
   # fetch media from the media store.
   homeserverUrl: "http://localhost:8008"
   # The TCP port on which the appservice runs on.
@@ -40,7 +40,7 @@ auth:
   # This MUST be a string (wrapped in quotes)
   clientID: "12345"
   botToken: "foobar"
-  # You must enable "Privileged Gateway Intents" in your bot settings on discord.com (e.g.g https://discord.com/developers/applications/12345/bot)
+  # You must enable "Privileged Gateway Intents" in your bot settings on discord.com (e.g. https://discord.com/developers/applications/12345/bot)
   # for this to work
   usePrivilegedIntents: false
 logging:
@@ -86,14 +86,14 @@ channel:
        unsetRoomAlias: true
        # Remove the room from the directory.
        unlistFromDirectory: true
-       # Set the room to be unavaliable for joining without an invite.
+       # Set the room to be unavailable for joining without an invite.
        setInviteOnly: true
        # Make all the discord users leave the room.
        ghostsLeave: true
 limits:
     # Delay in milliseconds between discord users joining a room.
     roomGhostJoinDelay: 6000
-    # Lock timeout in milliseconds before seinding messages to discord to avoid
+    # Lock timeout in milliseconds before sending messages to discord to avoid
     # echos. Default is rather high as the lock will most likely time out
     # before anyways.
     # echos = (Copies of a sent message may arrive from discord before we've