more consistent formatting

Co-authored-by: Raphael-Gazzotti <125291580+Raphael-Gazzotti@users.noreply.github.com>

Author: apdavison

pipeline/src/collection.py

@@ -91,7 +91,9 @@ def save(self, path, individual_files=False, include_empty_properties=False):
         for node in tuple(self.nodes.values()):
 
             if node.type_.startswith("https://openminds.ebrains.eu/"):
-                data_context = {"@vocab": "https://openminds.ebrains.eu/vocab/"}
+                data_context = {
+                    "@vocab": "https://openminds.ebrains.eu/vocab/"
+                }
             else:
                 data_context = {
                     "@vocab": "https://openminds.om-i.org/props/"