Electrical Cord Lock How Do I Replace An Old 2 Pronged Electrical Cord On My 1951 Refrigerator With A 3 Prong (grounded) Cord?

How do I replace an old 2 pronged electrical cord on my 1951 refrigerator with a 3 prong (grounded) cord? - electrical cord lock

Refrigerator I have a Gibson 1951st
The fridge is almost new, except the power cord that plugs into the wall.
The cable is a tooth "groundless" 2-about a "country" 3-points will be replaced.
How do I remove it safely, if there are only 2 son connected the power cord from the inside of the refrigerator?
Thank you.

Thank you.