docs: update readme

Author: kawre

README.md

@@ -11,7 +11,7 @@
 https://github.com/kawre/leetcode.nvim/assets/69250723/aee6584c-e099-4409-b114-123cb32b7563
 
 > [!CAUTION]
-> This plugin has been exclusively tested with `Java`.
+> This plugin has been primarily tested with `Java`.
 > If you encounter any errors while using other languages,
 > please open an issue to report them.
 
@@ -314,6 +314,13 @@ image_support = false,
 
 - `restore` try to restore default question layout
 
+- `session`
+
+  - `create` create a new session
+  - `change` change the current session
+
+  - `update` update the current session in case it went out of sync
+
 - `desc` toggle question description
 
   - `toggle` same as `Leet desc`

README.zh.md

@@ -316,6 +316,14 @@ image_support = false, -- 将此设置为 `true` 将禁用问题描述的换行
 
 - `restore` 尝试恢复默认问题布局
 
+- `session`
+
+  - `create` 创建一个新的会话
+
+  - `change` 更改当前会话
+
+  - `update` 更新当前会话，以防它失去同步
+
 - `desc` 切换问题描述
 
   - `toggle` 与 `Leet desc` 相同