Update doc/user_guide/user_guide.md

Co-authored-by: Christoph Kuhnke <github@kuhnke.net>

Author: MarleneKress79789

doc/user_guide/user_guide.md

@@ -42,7 +42,7 @@ You can find further information on these UDFs [here](manage_models.md).
 These UDFs call a model stored in the BucketFS and use it to make predictions on the given input data.
 
 We have selected a curated list of models, which are used in our UDFs. 
-You can isntall these models using the `install_default_models`- command 
+You can install these models using the `install_default_models`- command 
 or the `INSTALL_AI_DEFAULT_MODEL_UDF`.
 These UDFs require only minimal configuation to use: