added "to" in a sentence.mdx

Added "to" in the sentence to make it more cohesive.

Author: jknilans

chapters/en/chapter1/9.mdx

@@ -9,7 +9,7 @@
 
 If your intent is to use a pretrained model or a fine-tuned version in production, please be aware that, while these models are powerful tools, they come with limitations. The biggest of these is that, to enable pretraining on large amounts of data, researchers often scrape all the content they can find, taking the best as well as the worst of what is available on the internet. 
 
-To give a quick illustration, let's go back the example of a `fill-mask` pipeline with the BERT model:
+To give a quick illustration, let's go back to the example of a `fill-mask` pipeline with the BERT model:
 
 ```python
 from transformers import pipeline