[clang-tools-extra] [clang-doc] Add --asset option to clang-doc (PR #94717)

[Paul Kirth via cfe-commits]

================
@@ -0,0 +1,14 @@
+// RUN: rm -rf %t
+// RUN: mkdir %t
----------------
ilovepi wrote:

```suggestion
// RUN: rm -rf %t && mkdir %t
```

https://github.com/llvm/llvm-project/pull/94717