yasakawa user tile should link to github profile

[rrrutledge]

Visit https://innersourcecommons.org/ja/learn/learning-path/introduction/01/

For some reason the yasakawa user tile links back to the same learning path page. It should link to https://github.com/yasakawa.

[lenucksi]

Maybe the email address in the commits were not linked to the GitHub account? (We're using that attribution & the GitHub API for this to work if I remember correctly.)