Update README.md

vec3 -> vec4
csm_PositionRaw

package/README.md

@@ -141,7 +141,7 @@ CSM provides the following output variables, all of them are optional but you MU
 | Variable | Type | Description | Available In | Notes |
 | ---------------- | ------- | --------------------------------------------------------------------------------------------------------------------- | --------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------- |
 | csm_Position | `vec3` | Custom vertex position. | Vertex Shader | csm_Position will be projected furthur down the line. Thus, no projection is needed here. |
-| csm_PositionRaw | `vec3` | Direct equivalent of `gl_Position`. | Vertex Shader | |
+| csm_PositionRaw | `vec4` | Direct equivalent of `gl_Position`. | Vertex Shader | |
 | csm_Normal | `vec3` | Custom vertex normals. | Vertex Shader |
 | csm_PointSize | `float` | Custom gl_PointSize. | Vertex Shader | Only available in `PointsMaterial` |
 | - | - | - | - | - |