fix: example context

Author: satra

pydra/utils/messenger.py

@@ -137,8 +137,7 @@ def make_message(obj, context=None):
     """Build a message."""
     if context is None:
         context = {
-            "@context": "https://raw.githubusercontent.com/"
-            "nipype/pydra/enh/task/pydra/schema/context.jsonld"
+            "@context": "https://raw.githubusercontent.com/nipype/pydra/master/pydra/schema/context.jsonld"
         }
     message = context.copy()
     message.update(**obj)