MDEV-20382: SHOW PRIVILEGES displays "Delete versioning rows" rather than "Delete History"

mysql-test/main/grant.result

@@ -612,7 +612,7 @@ Create temporary tables	Databases	To use CREATE TEMPORARY TABLE
 Create view	Tables	To create new views
 Create user	Server Admin	To create new users
 Delete	Tables	To delete existing rows
-Delete versioning rows	Tables	To delete versioning table historical rows
+Delete history	Tables	To delete versioning table historical rows
 Drop	Databases,Tables	To drop databases, tables, and views
 Event	Server Admin	To create, alter, drop and execute events
 Execute	Functions,Procedures	To execute stored routines

sql/sql_show.cc

@@ -592,7 +592,7 @@ static struct show_privileges_st sys_privileges[]=
   {"Create view", "Tables",  "To create new views"},
   {"Create user", "Server Admin",  "To create new users"},
   {"Delete", "Tables",  "To delete existing rows"},
-  {"Delete versioning rows", "Tables", "To delete versioning table historical rows"},
+  {"Delete history", "Tables", "To delete versioning table historical rows"},
   {"Drop", "Databases,Tables", "To drop databases, tables, and views"},
 #ifdef HAVE_EVENT_SCHEDULER
   {"Event","Server Admin","To create, alter, drop and execute events"},