* index.md - update example to edition 2024

* enum.md - typo fix
* opaque-migration.md - added go imports
* google.protobuf.md - document the new `edition` field and `syntax_editions` enum
* ruby-generated.md - removed references to DSL
* rust-generated.md - added information about traits

PiperOrigin-RevId: 808700481

Author: mkruskal-google

content/_index.md

@@ -24,7 +24,7 @@ Objective-C, Python, and Ruby. With proto3, you can also work with PHP.
 ## Example Implementation
 
 ```proto
-edition = "2023";
+edition = "2024";
 
 message Person {
   string name = 1;