📝 Remove text about fork

Author: Freed-Wu

.github/workflows/main.yml

@@ -10,11 +10,6 @@
       - doc/*
   workflow_dispatch:
 
-# Prevent concurrent auto-commits
-concurrency:
-  group: auto-commit
-  cancel-in-progress: true
-
 jobs:
   build:
     runs-on: ubuntu-latest

README.md

@@ -34,9 +34,6 @@
 
 ## Install
 
-**NOTE**: upstream xml has been [broken](https://github.com/lubyk/xml/pull/20).
-use the [fork](assets/rockspecs/xml-1.1.3-1.rockspec) before installing.
-
 ### rocks.nvim
 
 #### Command style