Fix broken smoke test

See gh-19926

spring-boot-tests/spring-boot-smoke-tests/spring-boot-smoke-test-liquibase/src/test/java/smoketest/liquibase/SampleLiquibaseApplicationTests.java

 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -59,10 +59,10 @@ class SampleLiquibaseApplicationTests {
 		assertThat(output).contains("Successfully acquired change log lock")
 				.contains("Creating database history table with name: PUBLIC.DATABASECHANGELOG")
 				.contains("Table person created")
-				.contains("ChangeSet classpath:/db/changelog/db.changelog-master.yaml::1::"
+				.contains("ChangeSet classpath:db/changelog/db.changelog-master.yaml::1::"
 						+ "marceloverdijk ran successfully")
 				.contains("New row inserted into person")
-				.contains("ChangeSet classpath:/db/changelog/"
+				.contains("ChangeSet classpath:db/changelog/"
 						+ "db.changelog-master.yaml::2::marceloverdijk ran successfully")
 				.contains("Successfully released change log lock");
 	}