Update release notes

Author: itsmeichigo

RELEASE-NOTES.txt

@@ -7,6 +7,7 @@
 - [*] Jetpack setup: Native experience for the connection step [https://github.com/woocommerce/woocommerce-ios/pull/15983]
 - [*] Payments: Updated the In-Person Payments `Learn More` redirection to display the correct page based on the selected payment provider [https://github.com/woocommerce/woocommerce-ios/pull/15998]
 - [*] Order details: Always show shipping labels section if order is eligible for label creation. [https://github.com/woocommerce/woocommerce-ios/pull/16010]
+- [*] Order details: Remove print buttons from shipment details [https://github.com/woocommerce/woocommerce-ios/pull/16012]
 
 23.0
 -----