Apply suggestions from code review

Co-authored-by: Lucas McDonald <[email protected]>

Author: imabhichow

Examples/runtimes/python/Migration/plaintext_to_awsdbe/src/README.md

@@ -28,13 +28,13 @@ In Step 2, you update your system to do the following:
 - start writing encrypted items
 - continue to read encrypted items
 
-When you deploy changes in Step 2,
+Before you deploy changes in Step 2,
 you are introducing encrypted items to your system,
 and must make sure that all your readers are updated with the changes from Step 1.
 
 Before you move onto the next step, you will need to encrypt all plaintext items in your dataset.
 Once you have completed this step,
-while new items are being encrypted using the new format and will be authenticated on read,
+while new items are encrypted and will be authenticated on read,
 your system will still accept reading plaintext, unauthenticated items.
 In order to complete migration to a system where you always authenticate your items,
 you should prioritize moving on to Step 3.