fix: change text of exisint email message (#34954) #146

Job	Run time
collect-and-verify	4m 41s
lms-1(py=3.11,dj=pinned,mongo=7.0)	13m 1s
lms-2(py=3.11,dj=pinned,mongo=7.0)	12m 52s
lms-3(py=3.11,dj=pinned,mongo=7.0)	19m 19s
lms-4(py=3.11,dj=pinned,mongo=7.0)	23m 36s
lms-5(py=3.11,dj=pinned,mongo=7.0)	12m 47s
lms-6(py=3.11,dj=pinned,mongo=7.0)	19m 2s
openedx-1-with-lms(py=3.11,dj=pinned,mongo=7.0)	15m 52s
openedx-2-with-lms(py=3.11,dj=pinned,mongo=7.0)	18m 37s
openedx-1-with-cms(py=3.11,dj=pinned,mongo=7.0)	10m 18s
openedx-2-with-cms(py=3.11,dj=pinned,mongo=7.0)	7m 27s
cms-1(py=3.11,dj=pinned,mongo=7.0)	5m 26s
cms-2(py=3.11,dj=pinned,mongo=7.0)	19m 38s
common-with-lms(py=3.11,dj=pinned,mongo=7.0)	12m 4s
common-with-cms(py=3.11,dj=pinned,mongo=7.0)	6m 36s
xmodule-with-lms(py=3.11,dj=pinned,mongo=7.0)	7m 52s
xmodule-with-cms(py=3.11,dj=pinned,mongo=7.0)	7m 55s
Unit tests successful	1s
compile-warnings-report	9s
coverage	0s
	3h 37m 13s

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