Actually no, Christian. It is just a practice that felt right to me. When I refer the the Trinity has a whole I typically that construction use my writings.
It is more for me to remind me to be reverent in what I may write. Also gives a wonderful way to search my writing when I write on the subject.
Though not 100%.
Chasidic Jews, AKA Ultra-Orthodox Jews, write G-d because the Jewish name for Hashem (Hebrew word for G-d, means the Name) is holy, and was only spoken in the Temple one day per year.