pretty print json

src/fs.rs

···
             let mut repos = self.repos.lock().unwrap();
             let repo = &mut repos[&did];
             if let Ok(Some(val)) = self.rt.block_on(repo.get_raw::<ipld_core::ipld::Ipld>(&key)) {
-                reply.data(&serde_json::to_string(&val).unwrap().as_bytes()[offset as usize..]);
+                reply.data(&serde_json::to_string_pretty(&val).unwrap().as_bytes()[offset as usize..]);
                 return;
             }
         } else {