docs: avoid redundant headers

docs/content/features/css.md

@@ -4,8 +4,6 @@ description: Automatic CSS optimization at build time
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-# CSS Minification
-
 sukr automatically minifies CSS files in your static directory during the build.
 
 ## How It Works

docs/content/features/feeds.md

@@ -4,8 +4,6 @@ description: Build-time feed generation for blog posts
 weight: 6
 ---
 
-# Atom Feeds
-
 sukr generates an Atom 1.0 feed for blog posts at build time.
 
 ## Output

docs/content/features/math.md

@@ -4,8 +4,6 @@ description: Build-time LaTeX math with KaTeX
 weight: 5
 ---
 
-# Math Rendering
-
 sukr renders LaTeX math expressions at build time using KaTeX, producing static HTML and CSS. No client-side JavaScript required.
 
 ## Inline Math

docs/content/features/mermaid.md

@@ -4,8 +4,6 @@ description: Build-time diagram rendering with Mermaid
 weight: 4
 ---
 
-# Mermaid Diagrams
-
 sukr renders Mermaid diagrams at build time, producing inline SVG. No client-side JavaScript required.
 
 ## Usage

docs/content/features/sections.md

@@ -4,8 +4,6 @@ description: Automatic section discovery and processing
 weight: 2
 ---
 
-# Sections
-
 sukr automatically discovers sections from your content directory structure.
 
 ## What is a Section?

docs/content/features/syntax-highlighting.md

@@ -4,8 +4,6 @@ description: Build-time code highlighting with Tree-sitter
 weight: 3
 ---
 
-# Syntax Highlighting
-
 sukr highlights code blocks at build time using Tree-sitter. No client-side JavaScript required.
 
 ## Usage

docs/content/features/templates.md

@@ -4,8 +4,6 @@ description: Customizable templates without recompilation
 weight: 1
 ---
 
-# Tera Templates
-
 sukr uses [Tera](https://tera.netlify.app/), a Jinja2-like templating engine. Templates are loaded at runtime, so you can modify them without recompiling sukr.
 
 ## Template Directory Structure