docs: fix Markdown rendering in OpenAPI Endpoints section

Author: barissayli

customer-service/README.md

@@ -163,7 +163,7 @@ http://localhost:8084/customer-service/v1/customers
 * OpenAPI JSON → `http://localhost:8084/customer-service/v3/api-docs`
 * OpenAPI YAML → `http://localhost:8084/customer-service/v3/api-docs.yaml`
 
-➡️ The YAML/JSON spec above is the **contract** that the client module (`customer-service-client`) consumes when generating code.  
+➡️ The YAML/JSON spec above is the **contract** that the client module (`customer-service-client`) consumes when generating code.<br/>
 For clarity, in this repository it is saved under the client module as `src/main/resources/customer-api-docs.yaml`.
 ---