Merge pull request #14516 from omoerbeek/backport-14514-to-rec-5.1.x

rec: Backport 14514 to rec 5.1.x: fix maintenanceCalls vs maintenanceCount

Author: omoerbeek

pdns/recursordist/RECURSOR-MIB.txt

@@ -1444,7 +1444,7 @@ recGroup OBJECT-GROUP
         zoneDisallowedNotify,
         nonResolvingNameserverEntries,
         maintenanceUSec,
-        maintenanceCalls,
+        maintenanceCount,
         authrcode0Count,
         authrcode1Count,
         authrcode2Count,