small fix to get url

[peterdudfield]

Pull Request

Description

Small fix to get url into database

Helps with #154

How Has This Been Tested?

Copied from nowcasting_api

• [x] Yes

Checklist:

• [ ] My code follows OCF's coding style guidelines
• [ ] I have performed a self-review of my own code
• [ ] I have made corresponding changes to the documentation
• [ ] I have added tests that prove my fix is effective or that my feature works
• [ ] I have checked my code and corrected any misspellings

[sentry-io[bot]]

🔍 Existing Issues For Review

Your pull request is modifying functions with the following pre-existing issues:

📄 File: pv_site_api/cache.py

Function	Unhandled Issue
wrapper	RuntimeError: dictionary changed size during iteration /sites/pv_... Event Count: 1

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