mb: Make ToTLinuxMSan use clang_tot_msan_release

clang_tot_msan_release_bot was renamed in #506239.

BUG=765859
TBR=dpranke

Change-Id: I865b202422bc626c98bfca70338ad4e8650aa7cf
Reviewed-on: https://chromium-review.googlesource.com/699642Reviewed-by: Hans Wennborg <hans@chromium.org>
Reviewed-by: Dirk Pranke <dpranke@chromium.org>
Cr-Commit-Position: refs/heads/master@{#506439}

tools/mb/mb_config.pyl

@@ -104,7 +104,7 @@
       'ToTLinux': 'clang_tot_linux_full_symbols_shared_release',
       'ToTLinux (dbg)': 'clang_tot_shared_debug',
       'ToTLinuxASan': 'clang_tot_asan_lsan_static_release',
-      'ToTLinuxMSan': 'clang_tot_msan_release_bot',
+      'ToTLinuxMSan': 'clang_tot_msan_release',
       'ToTLinuxLLD': 'clang_tot_lld_release_shared',
       'ToTLinuxThinLTO': 'clang_tot_release_full_symbols_thin_lto_static_use_lld',
       'ToTLinuxUBSanVptr': 'clang_tot_edge_ubsan_no_recover_hack_static_release',