docs: enhance README with structured documentation and navigation

Author: enriqueavindi

README.md

@@ -24,7 +24,7 @@ SPDX-License-Identifier: CC-BY-4.0
 [![Helm](https://img.shields.io/badge/Helm-0F1689?style=flat&logo=helm&logoColor=white)](https://helm.sh/)
 [![REUSE Compliance](https://img.shields.io/badge/REUSE-compliant-green)](https://reuse.software/)
 
-[![GitHub Issues](https://img.shields.io/github/issues/InditexTech/k8s-overcommit-operator)]
+[![GitHub Issues](https://img.shields.io/github/issues/InditexTech/k8s-overcommit-operator)](https://github.com/InditexTech/k8s-overcommit-operator/issues)
 [![GitHub Pull Requests](https://img.shields.io/github/issues-pr/InditexTech/k8s-overcommit-operator)](https://github.com/InditexTech/k8s-overcommit-operator/pulls)
 [![GitHub Stars](https://img.shields.io/github/stars/InditexTech/k8s-overcommit-operator?style=social)](https://github.com/InditexTech/k8s-overcommit-operator/stargazers)
 [![GitHub Forks](https://img.shields.io/github/forks/InditexTech/k8s-overcommit-operator?style=social)](https://github.com/InditexTech/k8s-overcommit-operator/network/members)

docs/README.md

@@ -5,12 +5,47 @@ SPDX-FileContributor: enriqueavi@inditex.com
 SPDX-License-Identifier: CC-BY-4.0
 -->
 
-# Documentation
+# 📚 Documentation
 
-[Arquitecture](./architecture.md)
+---
 
-[Quickstart](./quickstart.md)
+## �️ Available Documentation
 
-[Metrics](./metrics.md)
+| 📄 Document | 📝 Description |
+|-------------|-----------------|
+| 🏗️ **[Architecture](./architecture.md)** | Learn about the system design and components |
+| 🚀 **[Quickstart](./quickstart.md)** | Get up and running quickly with step-by-step guide |
+| 📊 **[Metrics](./metrics.md)** | Monitor and observe your operator |
+| 🧪 **[E2E Tests](./e2e-test.md)** | End-to-end testing guide and best practices |
 
-[E2E Tests](./e2e-test.md)
+---
+
+## 🔗 Quick Navigation
+
+### 🏗️ Architecture
+
+Understand the system design, components, and how everything fits together.
+
+👉 **[Read Architecture Guide](./architecture.md)**
+
+### 🚀 Quickstart
+
+Get started in minutes with our comprehensive step-by-step guide.
+
+👉 **[Start Here](./quickstart.md)**
+
+### 📊 Metrics
+
+Monitor your operator with comprehensive metrics and observability.
+
+👉 **[View Metrics Guide](./metrics.md)**
+
+### 🧪 E2E Tests
+
+Learn how to run and write effective end-to-end tests.
+
+👉 **[Testing Guide](./e2e-test.md)**
+
+---
+
+📖 Happy documenting! 🎉