[Java]: Formatting out generated stubs tidy up.

Author: mjpt777

main/java/uk/co/real_logic/sbe/generation/java/JavaGenerator.java

@@ -1099,10 +1099,10 @@ private CharSequence generateMessageFlyweightCode(final String className, final
  final String semanticType = token.encoding().semanticType() == null ? "" : token.encoding().semanticType();
 
  return String.format(
- " public static final %1$s BLOCK_LENGTH = %2$s;\n\n" +
+ " public static final %1$s BLOCK_LENGTH = %2$s;\n" +
  " public static final %3$s TEMPLATE_ID = %4$s;\n" +
  " public static final %5$s SCHEMA_ID = %6$s;\n" +
- " public static final %7$s SCHEMA_VERSION = %8$s;\n" +
+ " public static final %7$s SCHEMA_VERSION = %8$s;\n\n" +
  " private final %9$s parentMessage = this;\n" +
  " private DirectBuffer buffer;\n" +
  " private int offset;\n" +