config-mapping mocking docs need @InjectMock

In the mocking section it says that the `Server` can be injected as a mock into a Quarkus test class with `@InjectMock`, yet the following code snippet just shows `@Inject`.

docs/src/main/asciidoc/config-mappings.adoc

@@ -450,7 +450,7 @@ The `Server` can be injected as a mock into a Quarkus test class with `@InjectMo
 ----
 @QuarkusTest
 class ServerMockTest {
-    @Inject
+    @InjectMock
     Server server;
 
     @Test