Update builder name prefix for screenshot collectors

Bug: 376446538
Change-Id: I64d31b001f74e74950bdd0bfc5e4be72e7d5a83d
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/5986493
Auto-Submit: Liviu Rau <[email protected]>
Commit-Queue: Mathias Bynens <[email protected]>
Reviewed-by: Alexander Schulze <[email protected]>
Reviewed-by: Mathias Bynens <[email protected]>

Author: Liviu Rau

scripts/tools/update_goldens_v2.py

@@ -64,5 +64,5 @@ def build_parser():
 if __name__ == '__main__':
     main(
         ProjectConfig(platforms=['linux', 'mac', 'win64'],
-                      builder_prefix='devtools_frontend',
+                      builder_prefix='dtf',
                       ignore_failed_builders=True), sys.argv[1:])