fixed the ehr url being sent to the rems admin

[smalho01]

Describe your changes

Fixed the issue of having the rems admin doing the prefetch not working in docker. To test, please run the following PRs all together in docker: mcode/rems-setup#17, mcode/rems-admin#119. Then in the settings panel for request generator uncheck the "Send Prefetch" option and send an order sign hook request to the rems admin.

Issue ticket number and Jira link

REMS-536

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[avirgulto]

I couldn't get it working with my docker setup, i was getting an error connecting to the rems-admin. I tried restarting my environment and stuff but it didn't seem to work! might be worth having someone else with docker test it out as well to see if it was just me or the branch

[jtquach1]

Leaving this here as an FYI- I did git checkout --theirs package-lock.json to use the changed package-lock.json on origin/dev rather than the one on this branch, since this branch was outdated with origin/dev.

[avirgulto]

Everything worked as expected.