docs: Add Toggle Profile Visiblity to TOC

Author: jswope00

source/learners/index.rst

@@ -45,8 +45,10 @@ Explore Your Dashboard and Profile
    how-tos/add_update_limited_profile.rst
    how-tos/add_update_full_profile.rst
    how-tos/add_links_to_social_media_accounts.rst
+   how-tos/toggle_profile_visibility.rst
    how-tos/view_another_learners_profile.rst
    how-tos/update_course_specific_settings.rst
+   
 
 
 .. _Resources for Students: