Enhance README with markdown links for references

Updated references with markdown links and descriptions.

README.md

@@ -309,29 +309,30 @@ Este modelo permite:
 
 ## References
 
-NeMo Guardrails Library Configuration Overview
+[NeMo Guardrails Library Configuration Overview]
+(https://docs.nvidia.com/nemo/guardrails/latest/configure-rails/overview.html)
 Visão geral de como estruturar o sistema de controle do LLM
-https://docs.nvidia.com/nemo/guardrails/latest/configure-rails/overview.html
 
 
-Tools Integration with the NeMo Guardrails Library
+
+[Tools Integration with the NeMo Guardrails Library]
+(https://docs.nvidia.com/nemo/guardrails/latest/integration/tools-integration.html)
 Como integrar ferramentas externas (tools/APIs) dentro de um fluxo com NVIDIA NeMo Guardrails.
   • Executar ações externas
   • Chamar APIs
   • Usar funções ou serviços do sistema
   • Integrar com agentes e workflows reais
-https://docs.nvidia.com/nemo/guardrails/latest/integration/tools-integration.html
 
 
-Observability:
+### Observability:
 
-Logging and Debugging Guardrails Generated Responses
+[Logging and Debugging Guardrails Generated Responses]
+(https://docs.nvidia.com/nemo/guardrails/latest/observability/logging/index.html)
 Como observar, entender e depurar o que acontece dentro do fluxo de guardrails durante a execução de um LLM.
-https://docs.nvidia.com/nemo/guardrails/latest/observability/logging/index.html
 
-Quick Start for Tracing Guardrails
+[Quick Start for Tracing Guardrails]
+(https://docs.nvidia.com/nemo/guardrails/latest/observability/tracing/quick-start.html)
 Exemplo de código para habilitar tracing (rastreamento detalhado) no NeMo Guardrails usando OpenTelemetry.
-https://docs.nvidia.com/nemo/guardrails/latest/observability/tracing/quick-start.html