Fix syntax errors in docs

See gh-17835

spring-boot-project/spring-boot-docs/src/main/asciidoc/production-ready-features.adoc

@@ -908,7 +908,7 @@ interface. The following code shows a sample `ReactiveHealthIndicator` implement
 		@Override
 		public Mono<Health> health() {
 			return doHealthCheck() //perform some specific health check that returns a Mono<Health>
-				.onErrorResume(ex -> Mono.just(new Health.Builder().down(ex).build())));
+				.onErrorResume(ex -> Mono.just(new Health.Builder().down(ex).build()));
 		}
 
 	}

spring-boot-project/spring-boot-docs/src/main/asciidoc/spring-boot-features.adoc

@@ -7948,7 +7948,7 @@ for assertions, as follows:
 		@Test
 		public void testName() throws Exception {
 			System.out.println("Hello World!");
-			assertThat(capture.toString(), containsString("World"));
+			assertThat(capture.toString(), containsString("World");
 		}
 
 	}