Go to https://www.irs.gov/forms-pubs/about-form-941
Then click on the link that says "All Form 941 Revisions"
Select/Download the top result for Form 941 (for 2020)
It is actually a "PDF Portfolio" and has both the April and January revisions inside
Here is more details on PDF Portfolios: https://helpx.adobe.com/acrobat/using/overview-pdf-portfolios.html
