docs(readme): sync keys

Author: kawre

README.md

@@ -148,7 +148,7 @@ To see full configuration types see [template.lua](./lua/leetcode/config/templat
     },
 
     keys = {
-        toggle = { "q", "<Esc>" }, ---@type string|string[]
+        toggle = { "q" }, ---@type string|string[]
         confirm = { "<CR>" }, ---@type string|string[]
 
         reset_testcases = "r", ---@type string

README.zh.md

@@ -150,7 +150,7 @@ https://github.com/kawre/leetcode.nvim/assets/69250723/aee6584c-e099-4409-b114-1
     },
 
     keys = {
-        toggle = { "q", "<Esc>" }, ---@type string|string[]
+        toggle = { "q" }, ---@type string|string[]
         confirm = { "<CR>" }, ---@type string|string[]
 
         reset_testcases = "r", ---@type string