bvar: fix description of lag lengths

9 jobs for bvar in 109 minutes (queued for 4 seconds)
Name Stage Failure
failed
test_matlab Test
Uploading artifacts...
Runtime platform
arch=amd64 os=linux pid=22541 revision=7f7a4bb0 version=13.11.0
tests/**/*.m.log: found 566 matching files and directories

tests/**/*.m.trs: found 566 matching files and directories

tests/**/*.jnl: found 1 matching files and directories

tests/run_test_matlab_output.txt: found 1 matching files and directories

Uploading artifacts as "archive" to coordinator... ok
id=28160 responseStatus=201 Created token=dQygJA7n
Cleaning up file based variables
ERROR: Job failed: exit status 1