[rtsan][NFC] Add 'known to have non-deterministic' caveat to documentation

[cjappl]

As suggested by @fmayer in #113979

[llvmbot]

@llvm/pr-subscribers-clang

Author: Chris Apple (cjappl)

Changes

As suggested by @fmayer in #113979

---

Full diff: https://github.com/llvm/llvm-project/pull/114281.diff

1 Files Affected:

• (modified) clang/docs/RealtimeSanitizer.rst (+2-2)

diff --git a/clang/docs/RealtimeSanitizer.rst b/clang/docs/RealtimeSanitizer.rst
index e5f5abfcd9b47e..193f5217c1a1a1 100644
--- a/clang/docs/RealtimeSanitizer.rst
+++ b/clang/docs/RealtimeSanitizer.rst
@@ -12,9 +12,9 @@ projects. RTSan can be used to detect real-time violations, i.e. calls to method
 that are not safe for use in functions with deterministic run time requirements.
 RTSan considers any function marked with the ``[[clang::nonblocking]]`` attribute
 to be a real-time function. At run-time, if RTSan detects a call to ``malloc``, 
-``free``, ``pthread_mutex_lock``, or anything else that could have a 
+``free``, ``pthread_mutex_lock``, or anything else known to have a 
 non-deterministic execution time in a function marked ``[[clang::nonblocking]]``
-RTSan raises an error.
+it raises an error. 
 
 RTSan performs its analysis at run-time but shares the ``[[clang::nonblocking]]`` 
 attribute with the :doc:`FunctionEffectAnalysis` system, which operates at 

[cjappl]

(doc build failure is unrelated, I will rebase after approval and make sure that passes):

Warning, treated as error:
/home/runner/work/llvm-project/llvm-project/clang-build/tools/clang/docs/index.rst:89:toctree contains reference to nonexisting document 'ClangFormattedStatus'

[cjappl]

Build failures tracked to #109220

[cjappl]

#114331 has been merged, so the test failure is fixed. Going to save the build machine a workout and submit without a rebase, as this change is very unlikely to cause any problems