[caller-analysis] fix typo in CallerAnalysis.h

Auxillary -> Auxiliary

Author: Ikko Ashimine

include/swift/SILOptimizer/Analysis/CallerAnalysis.h

@@ -180,7 +180,7 @@ class CallerAnalysis final : public SILAnalysis {
   void verify(SILFunction *caller, const FunctionInfo &callerInfo) const;
 };
 
-/// Auxillary information that we store about a specific caller.
+/// Auxiliary information that we store about a specific caller.
 struct CallerAnalysis::CallerInfo {
   /// Given a SILFunction F that contains at least one partial apply of the
   /// given function, map F to the minimum number of partial applied