chore: update readme and ci scripts

Author: pi0

.github/workflows/autofix.yml

@@ -3,7 +3,9 @@ name: autofix.ci # needed to securely identify the workflow
 on:
   pull_request:
   push:
-    branches: ["main"]
+    branches:
+      - v2
+      - v3
 
 permissions:
   contents: read

.github/workflows/ci.yml

@@ -4,9 +4,11 @@ on:
   push:
     branches:
       - v2
+      - v3
   pull_request:
     branches:
       - v2
+      - v3
 
 jobs:
   lint:

README.md

@@ -10,7 +10,7 @@
 Create web servers that run anywhere! 📖 [**documentation**](https://nitro.build)
 
 > [!NOTE]
-> You are on the v2 branch. Check [main branch](https://github.com/nitrojs/nitro/tree/main) for v3 development tree.
+> You are on the **v2 support branch.** Checkout the [v2](https://github.com/nitrojs/nitro/tree/v2) branch for the current development branch.
 
 ## Contribution