[llvm] [DirectX] Update "dx.TypedBuffer" docs to include a "signed" bit (PR #100695)

[Justin Bogner via llvm-commits]

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@@ -128,6 +129,8 @@ There are a few fields to describe variants of all of these types:
        writeable) and UAVs (writeable).
    * - IsROV
      - Whether the UAV is a rasterizer ordered view. Always ``0`` for SRVs.
+   * - IsSigned
+     - Whether the element type is signed ("dx.TypedBuffer" only)
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bogner wrote:

Added a couple of sentences to make this clearer


https://github.com/llvm/llvm-project/pull/100695