[clang-tools-extra] [clang-doc] add enum test (PR #97679)

[Paul Kirth via cfe-commits]

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@@ -0,0 +1,38 @@
+// RUN: clang-doc --format=html --doxygen --output=%t/docs --executor=standalone %s
+// RUN: clang-doc --format=md --doxygen --output=%t/docs --executor=standalone %s
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ilovepi wrote:

This can't work right, can it? you haven't made `%t`, you also don't need `docs`, right? It would be good if I didn't have to point these out in every patch... I've given this piece of feedback in almost all of your patches.

https://github.com/llvm/llvm-project/pull/97679