check: Ignore -rust.md for now

Signed-off-by: Daniel Silverstone <dsilvers@digital-scurf.org>
1 job for subplot-rust in 7 minutes and 28 seconds (queued for 4 seconds)
latest
Status Name Job ID Coverage
  Test
failed check #1360610711

00:07:28

 
Name Stage Failure
failed
check Test
failures:
extracting_metadata_from_a_document

test result: FAILED. 57 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 31.04s

error: test failed, to rerun pass '--test subplot'
Command ['cargo', 'test'] failed
Cleaning up file based variables
ERROR: Job failed: exit code 1