chore: update todo status

Author: kiaking

README.md

@@ -72,8 +72,8 @@ declare module "@vue/runtime-core" {
 
 ## TODOs as of 4.0.0-alpha.1
 
-- Add TypeScript support
+- ~Add TypeScript support~
 - ~Make all unit test working~
 - ~Refactor the codebase~
-- Update the build system to align with Vue 3
+- ~Update the build system to align with Vue 3~
 - Update docs