[chore] Add newline to the end of the chloggen template #19872

Job	Run time
contrib-tests-matrix (receiver-0)	4m 33s
contrib-tests-matrix (receiver-1)	5m 53s
contrib-tests-matrix (receiver-2)	8m 27s
contrib-tests-matrix (receiver-3)	6m 6s
contrib-tests-matrix (processor)	4m 18s
contrib-tests-matrix (exporter-0)	8m 40s
contrib-tests-matrix (exporter-1)	7m 22s
contrib-tests-matrix (extension)	5m 2s
contrib-tests-matrix (connector)	3m 11s
contrib-tests-matrix (internal)	5m 21s
contrib-tests-matrix (pkg)	2m 38s
contrib-tests-matrix (cmd-0)	7m 9s
contrib-tests-matrix (cmd-1)	3m 52s
contrib-tests-matrix (other)	8m 19s
contrib_tests	7s
	1h 20m 58s

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