markov: Update example config to reflect most recent changes

* save_every is no longer necessary so it is removed
* sql_path is added if you need to specify the location of the database
  SQL

Signed-off-by: Alek Ratzloff <alekratz@gmail.com>

config.example.toml

@@ -99,19 +99,15 @@ module = "plugins.markov"
 # order = 1
 
 # data_path
-# This is the path to the directory that holds the markov chains. Chains are
-# stored by channel, and then bey user.
-# For example, data/markov/#chat/nick holds the data for the user "nick".
-# default: data/markov/
-# data_path = "data/markov"
+# This is the path to the sqlite3 database file that holds the markov chains.
+# default: data/markov/markov.db
+# data_path = "data/markov/markov.db"
 
-# save_every
-# Markov chains for all users are saved periodically. This value determine the
-# number of seconds between saves.
-# If a user's markov chain is not accessed after their last save, it is pruned
-# from memory.
-# default: 1800
-# save_every = 1800
+# sql_path
+# This is the path to the SQL file that contains the initial database layout.
+# This probably does not need to be changed.
+# default: data/markov/db.sql
+# data_path = "data/markov/db.sql"
 
 # reply_chance
 # Whenever someone says something, the bot will train their markov chain based