Agents/Tools demo and minor fixes

Author: eldermoraes

documentation/modules/ROOT/assets/images/devui-mailpit.png

@@ -25,7 +25,7 @@
 * AI
 ** xref:prompts.adoc[Working with prompts]
 ** xref:chains_memory.adoc[Chains and Memory]
-** xref:agents_tools.adoc[Agents and Tools]
+** xref:agents_tools.adoc[Agents/Tools]
 ** xref:embed_documents.adoc[Embedding Documents]
 ** xref:local_models.adoc[Working with local models]
 ** xref:kubernetes_kafka_ai.adoc[Bringing Kubernetes and Kafka to the party]