updated docs of badgerdb Key() and Value() APIs implementations.

badger_db.go

@@ -281,18 +281,22 @@ func (i *badgerDBIterator) Valid() bool {
 
 // Key implements Iterator.
 // The caller should not modify the contents of the returned slice.
-// To work with the slice, make a copy and modify the copy instead.
+// Instead, the caller should make a copy and work on the copy.
 func (i *badgerDBIterator) Key() []byte {
 	if !i.Valid() {
 		panic("iterator is invalid")
 	}
 	return i.iter.Item().Key()
 }
 
+// Value implements Iterator.
+// The caller should not modify the contents of the returned slice.
+// Instead, the caller should make a copy and work on the copy.
 func (i *badgerDBIterator) Value() []byte {
 	if !i.Valid() {
 		panic("iterator is invalid")
 	}
+
 	val, err := i.iter.Item().ValueCopy(nil)
 	if err != nil {
 		i.lastErr = err