fix last two img

TESTING.md

@@ -79,12 +79,12 @@ Before you connect your wallet to the extension, you need to upload the public k
 1. On [rafiki.money], Select **Settings > Developer Keys**.
 1. Expand the drop-down menu for your wallet account, and then expand the desired wallet address. NEEDS IMG
 
-   <img src="https://openpayments.dev/img/snippets/generate-keys.png" alt="Expanded account showing payment pointer and upload key" style="max-width:600px;"/>
+   <img src="https://openpayments.dev/img/snippets/generate-keys.png" alt="Expanded account showing payment pointer and upload key" width="600" />
 
 1. Click the **Upload key** button.
 1. Paste the copied public key to the input field, add a nickname for the key and click **Upload key**. NEEDS IMG
 
-   <img src="https://openpayments.dev/img/snippets/view-keys.png" alt="Expanded account showing key ID, option to show public key, and button to revoke public/private keys" style="max-height:300px;"/>
+   <img src="https://openpayments.dev/img/snippets/view-keys.png" alt="Expanded account showing key ID, option to show public key, and button to revoke public/private keys" height="300" />
 
 You can now open the extension popup again and connect your wallet.