TST: Correct test name for MLK holiday. (#16287)

Author: julesjulian

pandas/tests/tseries/test_holiday.py

@@ -344,7 +344,7 @@ def test_after_nearest_workday(self):
 
 class TestFederalHolidayCalendar(object):
 
-    def test_no_mlk_before_1984(self):
+    def test_no_mlk_before_1986(self):
         # see gh-10278
         class MLKCalendar(AbstractHolidayCalendar):
             rules = [USMartinLutherKingJr]