Callout 4KB limit on cert size

Author: palpatim

src/pages/[platform]/build-a-backend/data/connect-to-existing-data-sources/connect-postgres-mysql-database/index.mdx

@@ -128,7 +128,7 @@ npx ampx generate schema-from-database --connection-uri-secret SQL_CONNECTION_ST
 
 The Lambda function will then use the specified root CA to validate connections to the database.
 
-When deploying your app to production, you need to [add the PEM-encoded public CA certificate as a secret](/[platform]/deploy-and-host/fullstack-branching/secrets-and-vars/#set-secrets). Make sure to add the certificate with the same secret name you used in the sandbox environment. For example, we used `CUSTOM_SSL_CERT` above. Make sure to preserve the newlines and the `------BEGIN CERTIFICATE------` and `------END CERTIFICATE------` delimiters in the value.
+When deploying your app to production, you need to [add the PEM-encoded public CA certificate as a secret](/[platform]/deploy-and-host/fullstack-branching/secrets-and-vars/#set-secrets). Make sure to add the certificate with the same secret name you used in the sandbox environment. For example, we used `CUSTOM_SSL_CERT` above. Make sure to preserve the newlines and the `------BEGIN CERTIFICATE------` and `------END CERTIFICATE------` delimiters in the value. Finally, make sure the size of the entire file does not exceed 4KB.
 
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