[clangd] Fix incorrect RecursiveASTVisitor usage in summarizeExpr()

[nridge]

Summary

Plus bonus typo fix

[sammccall]

Oops, thanks!

clang-tools-extra/clangd/InlayHints.cpp

struct Namer : ConstStmtVisitor<Namer, std::string> {
     std::string VisitCallExpr(const CallExpr *E) {
       return Visit(E->getCallee());
     }
     std::string
     VisitCXXDependentScopeMemberExpr(const CXXDependentScopeMemberExpr *E) {
       return getSimpleName(E->getMember()).str();
     }
     std::string
-    VisitDependentScopeMemberExpr(const DependentScopeDeclRefExpr *E) {
+    VisitDependentScopeDeclRefExpr(const DependentScopeDeclRefExpr *E) {
       return getSimpleName(E->getDeclName()).str();
     }
     std::string VisitCXXFunctionalCastExpr(const CXXFunctionalCastExpr *E) {
       return getSimpleName(E->getType()).str();
     }
     std::string VisitCXXTemporaryObjectExpr(const CXXTemporaryObjectExpr *E) {
       return getSimpleName(E->getType()).str();
     }
public:
   }
 
   bool VisitCallExpr(CallExpr *E) {
     if (!Cfg.InlayHints.Parameters)
       return true;
 
     // Do not show parameter hints for operator calls written using operator
     // syntax or user-defined literals. (Among other reasons, the resulting
-    // hints can look awkard, e.g. the expression can itself be a function
+    // hints can look awkward, e.g. the expression can itself be a function
     // argument and then we'd get two hints side by side).
     if (isa<CXXOperatorCallExpr>(E) || isa<UserDefinedLiteral>(E))
       return true;
 
     auto CalleeDecls = Resolver->resolveCalleeOfCallExpr(E);
     if (CalleeDecls.size() != 1)
       return true;
     const FunctionDecl *Callee = nullptr;