fix style issue

Author: honghr

src/azure-cli/azure/cli/command_modules/mysql/_breaking_change.py

@@ -8,4 +8,4 @@
 register_argument_deprecate('mysql flexible-server create', '--storage-redundancy')
 register_argument_deprecate('mysql flexible-server restore', '--storage-redundancy')
 register_argument_deprecate('mysql flexible-server geo-restore', '--storage-redundancy')
-register_argument_deprecate('mysql flexible-server replica create', '--storage-redundancy')
+register_argument_deprecate('mysql flexible-server replica create', '--storage-redundancy')