docs(README): fix links and imports

Author: awsarron

README.md

@@ -129,7 +129,6 @@ from strands import Agent
 from strands.models import BedrockModel
 from strands.models.ollama import OllamaModel
 from strands.models.llamaapi import LlamaAPIModel
-from strands.models.llamacpp import LlamaCppModel
 
 # Bedrock
 bedrock_model = BedrockModel(
@@ -164,7 +163,7 @@ Built-in providers:
  - [LlamaAPI](https://strandsagents.com/latest/user-guide/concepts/model-providers/llamaapi/)
  - [Ollama](https://strandsagents.com/latest/user-guide/concepts/model-providers/ollama/)
  - [OpenAI](https://strandsagents.com/latest/user-guide/concepts/model-providers/openai/)
- - [Writer](https://strandsagents.com/latest/documentation/docs/user-guide/concepts/model-providers/writer/)
+ - [Writer](https://strandsagents.com/latest/user-guide/concepts/model-providers/writer/)
 
 Custom providers can be implemented using [Custom Providers](https://strandsagents.com/latest/user-guide/concepts/model-providers/custom_model_provider/)