As per my understanding, your formatting of Workflow template is getting disturbed in the email received through workflow. If so,please explore if following helps.
You may wish to put all the text that is not within the Google doc table also in a tabular format table. I tried some workflow based test reports with a format similar as yours and got the text well aligned in email as well.
Please see the images below.
Picture 1- Google template with all the text included in various tables in the template.
Please note that even the numbered bullets are in table and those are manually created bullet points. I have purposely kept the tableborders in black color so that one can see how different text is arranged.
Picture 2: Email body with black color borders in the template. The text appears to be well aligned in the email body. It is just that the table borders are appearing.
Picture 3: The email body when the table borders are made white at all places except two tabular formats- customer details and red color large bold text. So essentially, I believe you may get the desired email formatting by including the text in tabular format and making the table borders white wherever only free flowing text needs to appear.
Hope this helps and proves useful…