[clang-tools-extra] [clang-doc] Switch to string internment (PR #190044)

[Paul Kirth via cfe-commits]

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@@ -436,6 +436,7 @@ Example usage for a project using a compile commands database:
         G->generateDocumentation(OutDirectory, std::move(USRToInfo), CDCtx));
     llvm::outs() << "Generating assets for docs...\n";
     ExitOnErr(G->createResources(CDCtx));
+
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ilovepi wrote:

hmm. looks like I may have mis-rebased or something. I'll up date the stack to make sure we avoid unrelated changes.

https://github.com/llvm/llvm-project/pull/190044