[clang] [clang][HLSL] Add sign intrinsic part 3 (PR #101989)

[Farzon Lotfi via cfe-commits]

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@@ -916,7 +916,7 @@ float4 lerp(float4, float4, float4);
 /// \brief Returns the length of the specified floating-point vector.
 /// \param x [in] The vector of floats, or a scalar float.
 ///
-/// Length is based on the following formula: sqrt(x[0]^2 + x[1]^2 + �).
+/// Length is based on the following formula: sqrt(x[0]^2 + x[1]^2 + �).
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farzonl wrote:

weird i'm still seeing `�`.

https://github.com/llvm/llvm-project/pull/101989