fix typo

Author: haochenghuang

articles/spring-apps/migration/migrate-to-azure-container-apps-custom-domain.md

@@ -117,7 +117,7 @@ For more information, see the [Peer-to-peer encryption](../../container-apps/net
 
 ## Traffic to external services
 
-When you define a certificate, you create a reference to a certifiacte stored in Azure Key Vault. You can enable TLS and mTLS for traffic to external services by loading the certificate from Azure Key Vault with `spring-cloud-azure-starter-keyvault-jca`.
+When you define a certificate, you create a reference to a certificate stored in Azure Key Vault. You can enable TLS and mTLS for traffic to external services by loading the certificate from Azure Key Vault with `spring-cloud-azure-starter-keyvault-jca`.
 
 To use this feature, your java project must be Spring Boot 3.1+ and adding the following dependency to your `pom.xml`: