doc: BytesCodec javadoc fix

Author: bogovicj

src/main/java/org/janelia/saalfeldlab/n5/Compression.java

@@ -61,6 +61,7 @@
 import java.lang.annotation.Target;
 
 import org.janelia.saalfeldlab.n5.codec.BytesCodec;
+import org.janelia.saalfeldlab.n5.codec.Codec;
 import org.scijava.annotations.Indexable;
 
 /**

src/main/java/org/janelia/saalfeldlab/n5/codec/BytesCodec.java

@@ -45,6 +45,10 @@ public interface BytesCodec extends Codec {
 	/**
 	 * Create a {@code BytesCodec} that sequentially applies {@code codecs} in
 	 * the given order for encoding, and in reverse order for decoding.
+	 *
+	 * @param codecs
+	 *            a list of BytesCodecs
+	 * @return the concatenated BytesCodec
 	 */
 	static BytesCodec concatenate(final BytesCodec... codecs) {