PT-2340 - Support MySQL 8.4

- Updated documentation

bin/pt-config-diff

@@ -5692,7 +5692,7 @@ There is no output when there are no differences.  When there are differences,
 pt-config-diff prints a report to STDOUT that looks similar to the following:
 
   2 config differences
-  Variable                  my.master.cnf   my.slave.cnf
+  Variable                  my.soource.cnf   my.replica.cnf
   ========================= =============== ===============
   datadir                   /tmp/12345/data /tmp/12346/data
   port                      12345           12346
@@ -5935,6 +5935,12 @@ dsn: user; copy: yes
 
 User for login if not current user.
 
+=item * s
+
+dsn: mysql_ssl; copy: yes
+
+Create SSL connection
+
 =back
 
 =head1 ENVIRONMENT