Update rfc/system/5606-json-idl.md

Co-authored-by: Fabio M. Graetz, Ph.D. <[email protected]>
Signed-off-by: Future-Outlier <[email protected]>

rfc/system/5606-json-idl.md

@@ -25,7 +25,7 @@ This feature can solve them all.
 @task
 def t1() -> dict:
   ...
-  return {"a": 1} -> protobuf Struct {"a": 1.0}
+  return {"a": 1}  # -> protobuf Struct {"a": 1.0}
 
 @task
 def t2(a: <dict>):