Update socialmedia.yml
Update socialmedia.yml

make it carpentries

Former-commit-id: 8ee790c1ed80ff0ffddabdc16db588a5d5283ce9 [formerly 8623db363a7a845f86201ca2e52b21512d863162]
Former-commit-id: 8a87700dbbb65e27e4d1ce40cb2e93f39d636c5c
LibraryCarpentry/librarycarpentry.github.io,LibraryCarpentry/librarycarpentry.github.io,LibraryCarpentry/librarycarpentry.github.io