Update learn/infrastructure/spy.md

Co-authored-by: Dawn Kelly <83190195+dawnkelly09@users.noreply.github.com>

learn/infrastructure/spy.md

@@ -13,7 +13,7 @@ The messages available over gossip are things like:
 - [Observations](#){target=\_blank} <!-- link to glossary -->
 - Guardian Heartbeats
 
-The source for the Spy is available on [Github](https://github.com/wormhole-foundation/wormhole/blob/main/node/cmd/spy/spy.go){target=\_blank}
+The source code for the Spy is available on [Github](https://github.com/wormhole-foundation/wormhole/blob/main/node/cmd/spy/spy.go){target=\_blank}
 
 !!! note
     The Spy has no persistence layer built in, so typically, it is paired with something like Redis or an SQL database to record relevant messages