[llvm] [BOLT][NFC] Added double escape characters (PR #93348)

[Alexander Yermolovich via llvm-commits]

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@@ -1,4 +1,4 @@
-# Check that we detect re-optimization attempt.
+## Check that we detect re-optimization attempt.
 
 # This test uses the clang driver without target flags and will only succeed
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ayermolo wrote:

here

https://github.com/llvm/llvm-project/pull/93348