main.js appease the linter

The linter was failing the CI pipeline due to the multi-line string.
Instead just use an array of strings that we join to build the final
result.

See #3606
9 jobs for feature-c/integrate-vmi-for-prod in 3 minutes and 56 seconds (queued for 3 seconds)
Status Job ID Name Coverage
  Test Tools
passed #194828
test_tools

00:00:06

 
  Test Quality
passed #194829
web
code_quality

00:00:09

 
  Test Unit
passed #194830
web
test_browser_unit

00:00:09

 
  Deploy Review
passed #194831
web
deploy_review

00:00:09

manual #194832
web allowed to fail manual
stop_deploy_review
 
  Test Functional
failed #194846
web
test_browser-functional

00:03:21

failed #194840
web
test_browser-functional

00:03:17

failed #194833
web
test_browser-functional

00:03:20

 
  Test Functional External
skipped #194834
web
test_browser-functional-external
 
Name Stage Failure
failed
test_browser-functional Test Functional
Finished in 13.259213s, 0.2263 runs/s, 0.7542 assertions/s.

3 runs, 10 assertions, 0 failures, 0 errors, 0 skips

[Minitest::CI] Generating test report in JUnit XML format...
Makefile:11: recipe for target 'functional' failed
make: *** [functional] Error 1
make: Leaving directory '/home/gitlab-runner/builds/b8d876c1/0/vidjil/vidjil/browser/test'
ERROR: Job failed: exit status 1