[DOCS] minor update on core concepts doc
remove "this" to make the sentence grammatically correct.
@@ -55,7 +55,7 @@ BentoML will:
#. Saves the model based on the ML training framework and artifact type used
#. Automatically extracts all the pip dependencies required by your BentoService class and put into a `requirements.txt` file
#. Saves all the local python code dependencies
-#. Put all the generated files into one file directory, which, by default, this is a location managed by BentoML
+#. Put all the generated files into one file directory, which, by default, is a location managed by BentoML
.. code-block:: python
