[clang-tools-extra] [clang-doc] switched from using relative to absolute paths (PR #93281)

[Paul Kirth via cfe-commits]

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@@ -979,6 +980,17 @@ static llvm::Error serializeIndex(ClangDocContext &CDCtx) {
                                    "error creating index file: " +
                                        FileErr.message());
   }
+  llvm::SmallString<128> RootPath(CDCtx.OutDirectory);
+  if (llvm::sys::path::is_relative(RootPath)) {
+    llvm::sys::fs::make_absolute(RootPath);
+  }
+  // replace escape character with forward slash it shouldn't matter
+  // when viewing from the browser this helps with preventing javascript
+  // from escaping unwanted characters leading to bad paths
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ilovepi wrote:

Can you use sentences and punctuation here?

Maybe something along these lines?
```suggestion
  // Replace the escaped characters with a forward slash. It shouldn't matter
  // when rendering the webpage in a web browser. This helps to prevent the
  // JavaScript from escaping characters incorrectly, and introducing  bad paths
  // in the URLs.
```

https://github.com/llvm/llvm-project/pull/93281