fix formatting; advance Kotlin version to 1.0.3

Author: yole

maven/hello-world/pom.xml

@@ -10,9 +10,9 @@
     <version>1.0-SNAPSHOT</version>
 
     <properties>
-        <kotlin.version>1.0.1-2</kotlin.version>
+        <kotlin.version>1.0.3</kotlin.version>
         <junit.version>4.12</junit.version>
-	<main.class>hello.HelloKt</main.class>
+        <main.class>hello.HelloKt</main.class>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     </properties>