Fix comment missing a dash for argument name (#31160) #3

Job	Run time
windows-unittest-matrix (receiver-0)	17m 42s
windows-unittest-matrix (receiver-1)	20m 23s
windows-unittest-matrix (processor)	14m 10s
windows-unittest-matrix (exporter)	26m 10s
windows-unittest-matrix (extension)	15m 17s
windows-unittest-matrix (internal)	16m 4s
windows-unittest-matrix (pkg)	11m 9s
windows-unittest-matrix (cmd)	23m 44s
windows-unittest-matrix (other)	22m 27s
windows-unittest	4s
	2h 47m 10s

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