Fix network directory path in make_summary

[aodenweller]

This just fixes the network directory path in make_summary.py to comply with the recently introduced name property in the config file.

Checklist

• I tested my contribution locally and it seems to work fine.

The rest of the checklist doesn't really apply as this is a minimal change.

• Code and workflow changes are sufficiently documented.
• Newly introduced dependencies are added to envs/environment.yaml and envs/environment.docs.yaml.
• Changes in configuration options are added in all of config.default.yaml, config.tutorial.yaml, and test/config.test1.yaml.
• Changes in configuration options are also documented in doc/configtables/*.csv and line references are adjusted in doc/configuration.rst and doc/tutorial.rst.
• A note for the release notes doc/release_notes.rst is amended in the format of previous release notes.