Problem: during a refactoring of mtr, a pattern for suppressing a warning from lowercase_table3 was lost.
Fix: re-introduce the suppression.
Problem 2: suppression was misspelt as supression. Fixed by adding a p.


mysql-test/include/mtr_warnings.sql:
  fixed spelling error
mysql-test/suite/rpl/t/rpl_bug33931.test:
  fixed spelling error
mysql-test/suite/rpl/t/rpl_idempotency.test:
  fixed spelling error
mysql-test/suite/rpl/t/rpl_temporary.test:
  fixed spelling error
mysql-test/suite/rpl/t/rpl_temporary_errors.test:
  fixed spelling error
mysql-test/t/lowercase_table3.test:
  fixed spelling error