[presubmit] use the correct path for third party libraries

This CL ensures that presubmit script checks Torque files in third_party
dependencies.

R=szuend@chromium.org
TBR=machenbach@chromium.org,sergiyb@chromium.org
CC=​yangguo@chromium.org

No-Try: true
Change-Id: I9e2b193defbebe7ae85cfc5d14ce50c2ac367e9b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1513674
Reviewed-by: Tamer Tas <tmrts@chromium.org>
Reviewed-by: Simon Zünd <szuend@chromium.org>
Commit-Queue: Tamer Tas <tmrts@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60152}

tools/v8_presubmit.py

@@ -366,7 +366,7 @@ class TorqueLintProcessor(CacheableSourceFileProcessor):
     return name.endswith('.tq')
 
   def GetPathsToSearch(self):
-    dirs = ['third-party', 'src']
+    dirs = ['third_party', 'src']
     test_dirs = ['torque']
     return dirs + [join('test', dir) for dir in test_dirs]