docs: update f&q (#5861)

packages/site/docs/manual/faq.en.md

@@ -8,3 +8,19 @@ order: 6
 `Extension` is a concept in G6 that collectively refers to all types of registrable content, including elements, behaviors, layouts, and plugins, among others.
 
 `Plugin` represents a flexible extension mechanism provided by G6 and is a special type of `Extension`.
+
+### Set Text Overflow Ellipsis
+
+Taking `label` as an example, you can set `labelWordWrap` and `labelWordWrapWidth` to achieve text overflow ellipsis.
+
+```typescript
+{
+  labelText: 'This is a long text',
+  labelWordWrap: true,
+  labelWordWrapWidth: 50,
+}
+```
+
+### Key Press Not Working
+
+Some plugins or behaviors support configuring key press triggers. Please use standard key names, such as `Control`, `Shift`, `Alt`, `Meta`, as well as letters, numbers, symbols, and so on.

packages/site/docs/manual/faq.zh.md

@@ -8,3 +8,19 @@ order: 6
 `Extension` 是 G6 中的一个概念，是所有可注册内容的统称，包含元素、交互、布局、插件等。
 
 `Plugin` 是 G6 提供的灵活扩展机制，是一种特殊的 `Extension`。
+
+### 设置文本超出省略
+
+以 label 为例，设置 `labelWordWrap` 和 `labelWordWrapWidth` 即可实现文本超出省略。
+
+```typescript
+{
+  labelText: 'This is a long text',
+  labelWordWrap: true,
+  labelWordWrapWidth: 50,
+}
+```
+
+### 按键不生效
+
+一些插件或交互支持配置触发按键，请使用标准按键名：如 `Control`, `Shift`, `Alt`, `Meta`，以及字母、数字、符号等。