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Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

lib/SILOptimizer/Utils/Existential.cpp

@@ -51,7 +51,7 @@ findInitExistentialFromGlobalAddr(GlobalAddrInst *GAI, SILInstruction *Insn) {
   if (IEUses.empty())
     return nullptr;
 
-  /// Walk backwards from Insn instruction till the begining of the basic block
+  /// Walk backwards from Insn instruction till the beginning of the basic block
   /// looking for an InitExistential.
   InitExistentialAddrInst *SingleIE = nullptr;
   for (auto II = Insn->getIterator().getReverse(),
@@ -262,7 +262,7 @@ void ConcreteExistentialInfo::initializeSubstitutionMap(
       ExistentialSig, [&](SubstitutableType *type) { return ConcreteType; },
       [&](CanType /*depType*/, Type /*replaceType*/,
           ProtocolDecl *proto) -> ProtocolConformanceRef {
-        // Directly providing ExistentialConformances to the SubstitionMap will
+        // Directly providing ExistentialConformances to the SubstitutionMap will
         // fail because of the mismatch between opened archetype conformance and
         // existential value conformance. Instead, provide a conformance lookup
         // function that pulls only the necessary conformances out of