[bolt] Fix typos discovered by codespell (#124726)

https://github.com/codespell-project/codespell
```bash
codespell bolt --skip="*.yaml,Maintainers.txt" --write-changes \
    --ignore-words-list=acount,alledges,ans,archtype,defin,iself,mis,mmaped,othere,outweight,vas
```

1 files changed, 1 insertions, 1 deletions

diff --git a/bolt/lib/Core/BinaryFunctionCallGraph.cpp b/bolt/lib/Core/BinaryFunctionCallGraph.cpp
index f0c46a82fc74..af2241998c93 100644
--- a/bolt/lib/Core/BinaryFunctionCallGraph.cpp
+++ b/bolt/lib/Core/BinaryFunctionCallGraph.cpp
@@ -122,7 +122,7 @@ buildCallGraph(BinaryContext &BC, CgFilterFunction Filter, bool CgFromPerfData,
       // create a node for a function unless it was the target of a call from
       // a hot block.  The alternative would be to set the count to one or
       // accumulate the number of calls from the callsite into the function
-      // samples.  Results from perfomance testing seem to favor the zero
+      // samples.  Results from performance testing seem to favor the zero
       // count though, so I'm leaving it this way for now.
       return Cg.addNode(Function, Size, Function->getKnownExecutionCount());
     }