[lib] Update comments to reference profile tab instead of more

Summary: Follow-up after renaming more tab to profile - in alert about blocked user/not friend we now should mention profile tab as a place to find friends and blocked users lists

Test Plan: Check if alert displays correct text

Reviewers: palys-swm, ashoat

Reviewed By: palys-swm, ashoat

Subscribers: ashoat, palys-swm, Adrian, atul

Differential Revision: https://phabricator.ashoat.com/D1160