chore: format docs (#8629)

docs/api/puppeteer.commoneventemitter.on.md

@@ -1,22 +1,24 @@
----
-sidebar_label: CommonEventEmitter.on
----
-# CommonEventEmitter.on() method
-
-**Signature:**
-
-```typescript
-interface CommonEventEmitter {on(event: EventType, handler: Handler): CommonEventEmitter;}
-```
-
-## Parameters
-
-|  Parameter | Type | Description |
-|  --- | --- | --- |
-|  event | [EventType](./puppeteer.eventtype.md) |  |
-|  handler | [Handler](./puppeteer.handler.md) |  |
-
-**Returns:**
-
-[CommonEventEmitter](./puppeteer.commoneventemitter.md)
-
+---
+sidebar_label: CommonEventEmitter.on
+---
+
+# CommonEventEmitter.on() method
+
+**Signature:**
+
+```typescript
+interface CommonEventEmitter {
+  on(event: EventType, handler: Handler): CommonEventEmitter;
+}
+```
+
+## Parameters
+
+| Parameter | Type                                  | Description |
+| --------- | ------------------------------------- | ----------- |
+| event     | [EventType](./puppeteer.eventtype.md) |             |
+| handler   | [Handler](./puppeteer.handler.md)     |             |
+
+**Returns:**
+
+[CommonEventEmitter](./puppeteer.commoneventemitter.md)