feat: add documentation (#8593)

docs/api/puppeteer.clearcustomqueryhandlers.md

@@ -0,0 +1,17 @@
+---
+sidebar_label: clearCustomQueryHandlers
+---
+
+# clearCustomQueryHandlers() function
+
+Clears all registered handlers.
+
+**Signature:**
+
+```typescript
+export declare function clearCustomQueryHandlers(): void;
+```
+
+**Returns:**
+
+void