Fix docs

Signed-off-by: Joas Schilling <coding@schilljs.com>

config/config.sample.php

@@ -1238,7 +1238,7 @@ $CONFIG = array(
  * and MySQL can handle 4 byte characters instead of 3 byte characters.
  *
  * If you want to convert an existing 3-byte setup into a 4-byte setup please 
- * set the parameters in MySQL as mentioned below run the migration command:
+ * set the parameters in MySQL as mentioned below and run the migration command:
  *  ./occ db:convert-mysql-charset
  * The config setting will be set automatically after a successful run.
  *