Fixed "lenghts" is a misspelling of "lengths"

tests/TestCase/Database/Schema/SqlserverSchemaTest.php

@@ -198,7 +198,7 @@ SQL;
                 50,
                 null,
                 null,
-                // Sqlserver returns double lenghts for unicode columns
+                // Sqlserver returns double lengths for unicode columns
                 ['type' => 'string', 'length' => 25]
             ],
             [