mark filterSensitiveLog as internal

Author: AllanZhengYP

smithy-typescript-codegen/src/main/java/software/amazon/smithy/typescript/codegen/StructureGenerator.java

@@ -167,6 +167,7 @@ private void renderStructureNamespace() {
         Symbol symbol = symbolProvider.toSymbol(shape);
         writer.openBlock("export namespace $L {", "}", symbol.getName(), () -> {
             String objectParam = "obj";
+            writer.writeDocs("@internal");
             writer.openBlock("export const filterSensitiveLog = ($L: $L): any => ({", "})",
                 objectParam, symbol.getName(),
                 () -> {

smithy-typescript-codegen/src/main/java/software/amazon/smithy/typescript/codegen/UnionGenerator.java

@@ -224,6 +224,7 @@ private void writeVisitorFunction() {
 
     private void writeFilterSensitiveLog() {
         String objectParam = "obj";
+        writer.writeDocs("@internal");
         writer.openBlock("export const filterSensitiveLog = ($L: $L): any => {", "}",
             objectParam, symbol.getName(),
             () -> {