fix typing

Author: taobig

tests/generators/ModelGeneratorMock.php

@@ -6,7 +6,7 @@
 use yii\gii\generators\model\Generator;
 
 /**
- * Just a mock for testing porpouses.
+ * Just a mock for testing purposes.
  *
  * @author Sidney Lins slinstj@gmail.com
  */
@@ -22,7 +22,7 @@ public function publicGenerateClassName($tableName, $useSchemaName = null)
         return $this->generateClassName($tableName, $useSchemaName);
     }
 
-    public function publicGenerateProperties(TableSchema $table): array
+    public function publicGenerateProperties(TableSchema $table)
     {
         return $this->generateProperties($table);
     }