typo: our -> out (#323)

Author: ravi77o

tutorials/29_Serializing_Pipelines.ipynb

@@ -29,7 +29,7 @@
     "\n",
     "Serialization means converting a pipeline to a format that you can save on your disk and load later. It's especially useful because a serialized pipeline can be saved on disk or a database, get sent over a network and more. \n",
     "\n",
-    "Although it's possible to serialize into other formats too, Haystack supports YAML our of the box to make it easy for humans to make changes without the need to go back and forth with Python code. In this tutorial, we will create a very simple pipeline in Python code, serialize it into YAML, make changes to it, and deserialize it back into a Haystack `Pipeline`."
+    "Although it's possible to serialize into other formats too, Haystack supports YAML out of the box to make it easy for humans to make changes without the need to go back and forth with Python code. In this tutorial, we will create a very simple pipeline in Python code, serialize it into YAML, make changes to it, and deserialize it back into a Haystack `Pipeline`."
    ]
   },
   {