docs: fix heading capitalization for consistency

Author: jarrensj

README.md

@@ -20,16 +20,16 @@
 ## Table of Contents
 
 - [🤔 What is Spec-Driven Development?](#-what-is-spec-driven-development)
-- [⚡ Get started](#-get-started)
+- [⚡ Get Started](#-get-started)
 - [📽️ Video Overview](#️-video-overview)
 - [🤖 Supported AI Agents](#-supported-ai-agents)
 - [🔧 Specify CLI Reference](#-specify-cli-reference)
-- [📚 Core philosophy](#-core-philosophy)
-- [🌟 Development phases](#-development-phases)
-- [🎯 Experimental goals](#-experimental-goals)
+- [📚 Core Philosophy](#-core-philosophy)
+- [🌟 Development Phases](#-development-phases)
+- [🎯 Experimental Goals](#-experimental-goals)
 - [🔧 Prerequisites](#-prerequisites)
-- [📖 Learn more](#-learn-more)
-- [📋 Detailed process](#-detailed-process)
+- [📖 Learn More](#-learn-more)
+- [📋 Detailed Process](#-detailed-process)
 - [🔍 Troubleshooting](#-troubleshooting)
 - [👥 Maintainers](#-maintainers)
 - [💬 Support](#-support)
@@ -40,7 +40,7 @@
 
 Spec-Driven Development **flips the script** on traditional software development. For decades, code has been king — specifications were just scaffolding we built and discarded once the "real work" of coding began. Spec-Driven Development changes this: **specifications become executable**, directly generating working implementations rather than just guiding them.
 
-## ⚡ Get started
+## ⚡ Get Started
 
 ### 1. Install Specify
 
@@ -247,7 +247,7 @@ Additional commands for enhanced quality and validation:
 |------------------|------------------------------------------------------------------------------------------------|
 | `SPECIFY_FEATURE` | Override feature detection for non-Git repositories. Set to the feature directory name (e.g., `001-photo-albums`) to work on a specific feature when not using Git branches.<br/>**Must be set in the context of the agent you're working with prior to using `/speckit.plan` or follow-up commands. |
 
-## 📚 Core philosophy
+## 📚 Core Philosophy
 
 Spec-Driven Development is a structured process that emphasizes:
 
@@ -256,15 +256,15 @@ Spec-Driven Development is a structured process that emphasizes:
 - **Multi-step refinement** rather than one-shot code generation from prompts
 - **Heavy reliance** on advanced AI model capabilities for specification interpretation
 
-## 🌟 Development phases
+## 🌟 Development Phases
 
 | Phase | Focus | Key Activities |
 |-------|-------|----------------|
 | **0-to-1 Development** ("Greenfield") | Generate from scratch | <ul><li>Start with high-level requirements</li><li>Generate specifications</li><li>Plan implementation steps</li><li>Build production-ready applications</li></ul> |
 | **Creative Exploration** | Parallel implementations | <ul><li>Explore diverse solutions</li><li>Support multiple technology stacks & architectures</li><li>Experiment with UX patterns</li></ul> |
 | **Iterative Enhancement** ("Brownfield") | Brownfield modernization | <ul><li>Add features iteratively</li><li>Modernize legacy systems</li><li>Adapt processes</li></ul> |
 
-## 🎯 Experimental goals
+## 🎯 Experimental Goals
 
 Our research and experimentation focus on:
 
@@ -300,14 +300,14 @@ Our research and experimentation focus on:
 
 If you encounter issues with an agent, please open an issue so we can refine the integration.
 
-## 📖 Learn more
+## 📖 Learn More
 
 - **[Complete Spec-Driven Development Methodology](./spec-driven.md)** - Deep dive into the full process
 - **[Detailed Walkthrough](#-detailed-process)** - Step-by-step implementation guide
 
 ---
 
-## 📋 Detailed process
+## 📋 Detailed Process
 
 <details>
 <summary>Click to expand the detailed step-by-step walkthrough</summary>