fix relative path warning. removed tab characters

spring-boot-modules/spring-boot-logging-log4j2/pom.xml

@@ -13,7 +13,7 @@
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
         <version>2.2.2.RELEASE</version>
-		<relativePath/>
+        <relativePath/>
     </parent>
 
     <dependencies>