Reorder advanced guides by alphabet

I think this way it's clearer they're unordered, thus making it clearer Quick Start *is* ordered.

Author: gaearon

content/docs/nav.yml

@@ -36,48 +36,48 @@
       title: Thinking In React
 - title: Advanced Guides
   items:
+    - id: accessibility
+      title: Accessibility
+    - id: code-splitting
+      title: Code-Splitting
+    - id: context
+      title: Context
+    - id: error-boundaries
+      title: Error Boundaries
+    - id: forwarding-refs
+      title: Forwarding Refs
+    - id: fragments
+      title: Fragments
+    - id: higher-order-components
+      title: Higher-Order Components
+    - id: integrating-with-other-libraries
+      title: Integrating with Other Libraries
     - id: jsx-in-depth
       title: JSX In Depth
-    - id: static-type-checking
-      title: Static Type Checking
-    - id: typechecking-with-proptypes
-      title: Typechecking With PropTypes
-    - id: refs-and-the-dom
-      title: Refs and the DOM
-    - id: uncontrolled-components
-      title: Uncontrolled Components
     - id: optimizing-performance
       title: Optimizing Performance
+    - id: portals
+      title: Portals
     - id: react-without-es6
       title: React Without ES6
     - id: react-without-jsx
       title: React Without JSX
     - id: reconciliation
       title: Reconciliation
-    - id: context
-      title: Context
-    - id: fragments
-      title: Fragments
-    - id: portals
-      title: Portals
-    - id: error-boundaries
-      title: Error Boundaries
-    - id: web-components
-      title: Web Components
-    - id: higher-order-components
-      title: Higher-Order Components
-    - id: forwarding-refs
-      title: Forwarding Refs
+    - id: refs-and-the-dom
+      title: Refs and the DOM
     - id: render-props
       title: Render Props
-    - id: integrating-with-other-libraries
-      title: Integrating with Other Libraries
-    - id: accessibility
-      title: Accessibility
-    - id: code-splitting
-      title: Code-Splitting
+    - id: static-type-checking
+      title: Static Type Checking
     - id: strict-mode
       title: Strict Mode
+    - id: typechecking-with-proptypes
+      title: Typechecking With PropTypes
+    - id: uncontrolled-components
+      title: Uncontrolled Components
+    - id: web-components
+      title: Web Components
 - title: Reference
   items:
     - id: react-api