Fix missing \n in committers-ports.dot while adding myself

Differential Revision:	https://reviews.freebsd.org/D1365
Submitted by:	danfe
Approved by:	bapt(mentor)


git-svn-id: svn+ssh://svn.freebsd.org/base/head@276178 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f