chore: format docs (#8629)

docs/api/puppeteer.frame._x.md

@@ -1,23 +1,25 @@
----
-sidebar_label: Frame.$x
----
-# Frame.$x() method
-
-This method evaluates the given XPath expression and returns the results.
-
-**Signature:**
-
-```typescript
-class Frame {$x(expression: string): Promise<ElementHandle[]>;}
-```
-
-## Parameters
-
-|  Parameter | Type | Description |
-|  --- | --- | --- |
-|  expression | string | the XPath expression to evaluate. |
-
-**Returns:**
-
-Promise&lt;[ElementHandle](./puppeteer.elementhandle.md)\[\]&gt;
-
+---
+sidebar_label: Frame.$x
+---
+
+# Frame.$x() method
+
+This method evaluates the given XPath expression and returns the results.
+
+**Signature:**
+
+```typescript
+class Frame {
+  $x(expression: string): Promise<ElementHandle[]>;
+}
+```
+
+## Parameters
+
+| Parameter  | Type   | Description                       |
+| ---------- | ------ | --------------------------------- |
+| expression | string | the XPath expression to evaluate. |
+
+**Returns:**
+
+Promise&lt;[ElementHandle](./puppeteer.elementhandle.md)\[\]&gt;