Fixing typo in useUser composable getter

[nathanaelg16]

Summary

This change fixes a typo in the useUser composable. Renames userIsMultipleFacility to userIsMultipleFacilityAdmin. No external references to the getter were found.

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Testing checklist

• Contributor has fully tested the PR manually
• If there are any front-end changes, before/after screenshots are included
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• Critical and brittle code paths are covered by unit tests

PR process

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Reviewer checklist

• Automated test coverage is satisfactory
• PR is fully functional
• PR has been tested for accessibility regressions
• External dependency files were updated if necessary (yarn and pip)
• Documentation is updated
• Contributor is in AUTHORS.md

[rtibbles]

Excellent, thanks for your careful eyes @nathanaelg16!

[github-actions]

Build Artifacts

Asset type	Download link
PEX file	kolibri-.pex
Windows Installer (EXE)	kolibri-0.16.2b2.dev0+git.1175.g5916aa71-windows-setup-unsigned.exe
Debian Package	kolibri_0.16.2b2.dev0+git.1175.g5916aa71-0ubuntu1_all.deb
Mac Installer (DMG)	kolibri-0.16.2b2.dev0+git.1175.g5916aa71-0.4.2.dmg
Android Package (APK)	kolibri-0.16.2b2.dev0+git.1175.g5916aa71-0.1.3-debug.apk
TAR file	kolibri-0.16.2b2.dev0+git.1175.g5916aa71.tar.gz
WHL file	kolibri-0.16.2b2.dev0+git.1175.g5916aa71-py2.py3-none-any.whl