Fix greeting in service-lifecycle example (#2197)

Examples/service-lifecycle/README.md

@@ -28,7 +28,7 @@ $ PROTOC_PATH=$(which protoc) swift run service-lifecycle
 Здравствуйте, request-1!
 नमस्ते, request-2!
 你好, request-3!
-French, request-4!
+Bonjour, request-4!
 Olá, request-5!
 Hola, request-6!
 Hello, request-7!

Examples/service-lifecycle/Sources/GreetingService.swift

@@ -30,7 +30,7 @@ final class GreetingService {
     "你好",
     "नमस्ते",
     "Hola",
-    "French",
+    "Bonjour",
     "Olá",
     "Здравствуйте",
     "こんにちは",