Fix Python now for real

codegen-server/python/src/main/kotlin/software/amazon/smithy/rust/codegen/server/python/smithy/generators/PythonServerUnionGenerator.kt

@@ -155,6 +155,7 @@ class PythonServerUnionGenerator(
         if (member.isTargetUnit()) {
             writer.rust(
                 "/// Tries to convert the enum instance into [`$variantName`](#T::$variantName), extracting the inner `()`.",
+                unionSymbol,
             )
             writer.rust("/// :rtype None:")
             writer.rustBlockTemplate("pub fn as_$funcNamePart(&self) -> #{pyo3}::PyResult<()>", "pyo3" to pyo3) {