refactor(body): use fmt::Debug of Bytes for Chunk

src/body/chunk.rs

@@ -114,7 +114,7 @@ impl AsRef<[u8]> for Chunk {
 impl fmt::Debug for Chunk {
     #[inline]
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        fmt::Debug::fmt(self.as_ref(), f)
+        fmt::Debug::fmt(&self.bytes, f)
     }
 }