[build] Fix typo in MB config

NOTRY=true
TBR=sergiyb@chromium.org

Bug: v8:7339
Change-Id: Iae0323d8f52fbd2db79c7362d074d758a7e1fa35
Reviewed-on: https://chromium-review.googlesource.com/977721Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Sergiy Byelozyorov <sergiyb@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52172}

infra/mb/mb_config.pyl

@@ -214,7 +214,7 @@
       'v8_linux64_msan_rel': 'release_simulate_arm64_msan_minimal_symbols',
       'v8_linux64_sanitizer_coverage_rel':
           'release_x64_asan_minimal_symbols_coverage',
-      'v8_linux64_jumbo_rel': 'release_x64_jumbo_trybot',
+      'v8_linux64_jumbo_compile_rel': 'release_x64_jumbo_trybot',
       'v8_linux64_tsan_rel': 'release_x64_tsan_minimal_symbols',
       'v8_linux64_tsan_concurrent_marking_rel_ng':
           'release_x64_tsan_concurrent_marking_minimal_symbols',