Remove use of canonicalName()

Author: dagnir

codegen/src/main/java/software/amazon/awssdk/codegen/poet/model/EventModelSpec.java

@@ -81,7 +81,7 @@ private CodeBlock classJavadoc() {
         return CodeBlock.builder()
                 .add("A specialization of {@code $L} that represents the {@code $L$$$L} event. Do not use this class " +
                         "directly. Instead, use the static builder methods on {@link $L}.",
-                        baseShapeModelSpec.className().canonicalName(), eventStream.getC2jName(),
+                        baseShapeModelSpec.className(), eventStream.getC2jName(),
                         eventModel.getC2jName(), poetExtensions.getModelClass(eventStream.getShapeName()))
                 .build();