In the "Vertex AI custom ML model training workflow" section, it seems like a word was missing. I propose to put the word "add" to make the sentence ok.
https://github.com/GoogleCloudPlatform/training-data-analyst/blob/master/self-paced-labs/vertex-ai/vertex-ai-qwikstart/lab_exercise_long.ipynb

Instead of

You can also specific additional Python dependencies to install through the CustomTrainingJob(requirements=... argument.

We will have

You can also add specific additional Python dependencies to install through the CustomTrainingJob(requirements=... argument.