testfw: psl coverage report: fix file naming

6 jobs for <span class="ref-name">289-functional-coverage-report-is-broken</span> in 12 minutes and 4 seconds (queued for 2 minutes and 47 seconds)
Status Job ID Name Coverage
  Precheck
passed #31595
triggered
check_component

00:00:43

 
  Build
passed #31598
triggered
build_doc

00:01:15

passed #31597
triggered
build_driver

00:00:40

passed #31596
triggered
build_ip_and_tests

00:01:45

passed #31599
triggered
build_linux_driver

00:00:45

 
  Test
passed #31600
triggered
test_ip_fast

00:06:54

95.1%