Update docs.html

[scicasoft]

in the part "Sharing code between controllers" it's "use('requireUser')" instead of "use('userRequired')"

[fodor0205]

docs.html is no longer considered an up-to-date documentation, as stated on http://compoundjs.com/
"Full Docs+Guides mix (outdated)"

The actual docs are located under the Actual Information section on http://compoundjs.com/ homepage.

If you're still using Railwayjs, you should update to Compound as described in the following migration guide:
https://github.com/1602/compound/blob/816462f7e321e775a5d4835741c3a2f81eaf7431/docs/migration-guide.md