Update README

Author: rlhagerm

.doc_gen/metadata/bedrock-runtime_metadata.yaml

@@ -1500,5 +1500,3 @@ bedrock-runtime_InvokeModel_TitanText:
                 - python.example_code.bedrock-runtime.InvokeModel_TitanText
   services:
     bedrock-runtime: {InvokeModel}
-
-

python/example_code/bedrock-runtime/README.md

@@ -64,6 +64,10 @@ functions within the same service.
 
 - [InvokeModel](models/amazon_titan_image_generator/invoke_model.py#L4)
 
+### Amazon Titan Text
+
+- [InvokeModel](models/amazon_titan_text/invoke_model.py#L4)
+
 ### Amazon Titan Text Embeddings
 
 - [InvokeModel](models/amazon_titan_text_embeddings/invoke_model.py#L4)