Fixed typos in Migration library documentation

Signed-off-by: Jacob Tabak <Jacob.Tabak@HelloWorld.com>
diff --git a/system/libraries/Migration.php b/system/libraries/Migration.php
index 932b06e..2ead3ae 100644
--- a/system/libraries/Migration.php
+++ b/system/libraries/Migration.php
@@ -272,7 +272,7 @@
 	// --------------------------------------------------------------------
 
 	/**
-	 * Set's the schema to the latest migration
+	 * Sets the schema to the latest migration
 	 *
 	 * @return	mixed	TRUE if already latest, FALSE if failed, int if upgraded
 	 */
@@ -296,7 +296,7 @@
 	// --------------------------------------------------------------------
 
 	/**
-	 * Set's the schema to the migration version set in config
+	 * Sets the schema to the migration version set in config
 	 *
 	 * @return	mixed	TRUE if already current, FALSE if failed, int if upgraded
 	 */