[clang] [clang][docs] Document ThreadSanitizer run-time flags and suppressions (PR #205761)

[Dmitry Vyukov via cfe-commits]

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@@ -327,6 +356,105 @@ Increase sampling frequency for mutex operations:
 
   $ TSAN_OPTIONS=enable_adaptive_delay=1:adaptive_delay_mutex_sample_rate=5 ./myapp
 
-More Information
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-`<https://github.com/google/sanitizers/wiki/ThreadSanitizerCppManual>`_
+Run-time Flags
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dvyukov wrote:

I think this should go before `Adaptive Delay`, which already uses runtime flags (and looks less generic than this section).

https://github.com/llvm/llvm-project/pull/205761