Replace tabs with spaces

Author: Jaspaul

tests/InvalidModelTest.php

@@ -38,15 +38,15 @@ public function testGetErrorsReturnsAMessageBagWithTheEmailKey()
 
     public function testSaveThrowsAValidationException()
     {
-    	$this->expectException(ValidationException::class);
+        $this->expectException(ValidationException::class);
 
         $model = new InvalidModel();
         $model->save();
     }
 
     public function testValidateThrowsAValidationException()
     {
-    	$this->expectException(ValidationException::class);
+        $this->expectException(ValidationException::class);
 
         $model = new InvalidModel();
         $model->validate();