minor fix in resources navigation

Author: LandauRaz

modules/resources/nav.adoc

@@ -4,6 +4,6 @@
     ** https://github.com/starkware-libs/starknet-specs/blob/master/api/starknet_api_openrpc.json[OpenRPC API ↗^]
     ** xref:version-notes.adoc[]
     ** References
-        *** xref:transactions-reference.adoc[Transaction fields and hash calculations]
         *** xref:messaging-reference.adoc[Messaging functions and events]
         *** xref:starkgate-reference.adoc[StarkGate functions and events]
+        *** xref:transactions-reference.adoc[Transaction fields and hash calculations]