docs: update readme.md

Author: mxschll

readme.md

@@ -5,8 +5,8 @@ This is a plugin for [Logseq](https://logseq.com/) that allows you to create tas
 ## Features
 
 - Create tasks in TickTick with `/tt`-command
-- Create tasks with priority and tags
-- Create subtasks 
+- The task's priority level is determined by the presence of `[#A]`, `[#B]`, or `[#C]` and set in TickTick accordingly where `[#A]` is the highest priority and `[#C]` is the lowest priority
+- Subtasks are created from child blocks of the task 
 
 ## How to get started