Rename spotlessLicense_header task to spotlessLicenseHeader

build.gradle

@@ -75,7 +75,7 @@ spotless {
 		trimTrailingWhitespace()
 		eclipse().configFile(file("codestyle/formatter.xml"))
 	}
-	format("license_header") {
+	format("licenseHeader") {
 		target("src/*/java/**/*.java", "src/test/java/**/*.java")
 		def header_file = file("codestyle/license_header.txt")
 		def delimiter = LicenseHeaderStep.DEFAULT_JAVA_HEADER_DELIMITER