Update SUMMARY.md

Author: mattqual

src/SUMMARY.md

@@ -5,14 +5,14 @@
   - [Access control namespaces](./overview/access-control.md)
   - [XML capabilities](./overview/xml-capabilities.md)
     - [Jet Engine: XML features](./overview/xml-capabilities/jet.md)
-  - [Meta-data](./overview/metadata.md)
-  - [Generics](./overview/generics.md)
   - [Relation to other technologies](./overview/relation.md)
     - [ActionScript 3](./overview/relation/as3.md)
     - [MXML](./overview/relation/mxml.md)
     - [React.js](./overview/relation/reactjs.md)
     - [JavaScript](./overview/relation/javascript.md)
     - [Java](./overview/relation/java.md)
+  - [Meta-data](./overview/metadata.md)
+  - [Generics](./overview/generics.md)
   - [Event model](./overview/event-model.md)
   - [Conditional compilation](./overview/conditional-compilation.md)
   - [Clonage](./overview/clonage.md)
@@ -58,4 +58,4 @@
 - [Conditional compilation](./conditional-compilation.md)
 - [ShockDoc](./shockdoc.md)
 - [Proxies](./proxies.md)
-- [Lexical conventions](./lexical-conventions.md)
+- [Lexical conventions](./lexical-conventions.md)