Fix for an unrelated MJML change.

Author: ocielliottc

server/src/test/java/com/objectcomputing/checkins/services/reviews/ReviewPeriodControllerTest.java

@@ -552,7 +552,7 @@ void testPUTReviewPeriodOpen() {
         assertEquals(2, emailSender.events.size());
         EmailHelper.validateEmail("SEND_EMAIL", "null", "null",
                                   "It's time for performance reviews!",
-                                  "Help us make this a valuable experience for everyone!",
+                                  "Your feedback helps us improve as a team!",
                                   member.getWorkEmail() + "," + supervisor.getWorkEmail(),
                                   emailSender.events.get(1)
         );