add link to exported fields (#584)

Co-authored-by: AlteredCoder <AlteredCoder>

docs/v1.X/docs/write_configurations/parsers.md

@@ -8,6 +8,9 @@
 > In the current example, we'll write a parser for the logs produced by `iptables` (netfilter) with the `-j LOG` target.
 > This document aims at detailing the process of writing and testing new parsers.
 
+!!! tips "Exported fields"
+    You can view some of the extracted fields of existing parsers in the [Hub](https://hub.crowdsec.net/fields)
+
 ## Base parser file
 
 The most simple parser can be defined as :

docs/v1.X/docs/write_configurations/scenarios.md

@@ -15,6 +15,9 @@
 > If you're writing scenario for existing logs, [take a look at the taxonomy](https://hub.crowdsec.net/fields) to find your way !
 
 
+!!! tips "Exported fields"
+    You can view some of the extracted fields of existing parsers in the [Hub](https://hub.crowdsec.net/fields)
+
 ## Base scenario file