Update llvm/include/llvm/Support/SpecialCaseList.h

Co-authored-by: Copilot <[email protected]>

Author: vitalybuka

llvm/include/llvm/Support/SpecialCaseList.h

@@ -129,7 +129,7 @@ class SpecialCaseList {
   using Match = std::pair<StringRef, unsigned>;
   static constexpr Match NotMatched = {"", 0};
 
-  // Lagacy v1 matcher.
+  // Legacy v1 matcher.
   class RegexMatcher {
   public:
     LLVM_ABI Error insert(StringRef Pattern, unsigned LineNumber);