Fix line break for MS teams webhook (#13081)

Signed-off-by: Ivan Valdes <ivan@vald.es>

Co-authored-by: Lauris BH <lauris@nix.lv>

modules/webhook/msteams.go

@@ -229,7 +229,7 @@ func (m *MSTeamsPayload) Push(p *api.PushPayload) (api.Payloader, error) {
 			strings.TrimRight(commit.Message, "\r\n"), commit.Author.Name)
 		// add linebreak to each commit but the last
 		if i < len(p.Commits)-1 {
-			text += "\n"
+			text += "\n\n"
 		}
 	}