docs: inline docs for batch call handler

internal/server/handlers.go

@@ -19,6 +19,7 @@ func batchCall() (bool, BatchResponse) {
 	var batchResponse BatchResponse
 
 	rpcResponses, err := RpcClient.EthBatchRpcCall(jsonrpc.RPCRequests{
+		// The rpc call id here is guranteed to be in order of appearance starting from index 0
 		jsonrpc.NewRequest("eth_syncing"),
 		jsonrpc.NewRequest("parity_chain"),
 	})
@@ -31,11 +32,13 @@ func batchCall() (bool, BatchResponse) {
 		return false, batchResponse
 	}
 
+	// Order and format isn't guranteed with batch calls therefore we individually process/transform each result in the map
 	if syncStatus, ok := rpcResponses[0]; ok {
 		val, err := syncStatus.GetBool()
 		if err != nil {
 			return false, batchResponse
 		}
+		// If sync is complete the rpc result is false, however this call dones't gurantee all blocks have been imported
 		batchResponse.SyncComplete = !val
 	}