Fix typo located in releasePointerCapture example (mdn#18452)

Corrected a misspelling of 'your' spotted inside of releasePointerCapture's example section as per grammatical context.

files/en-us/web/api/element/releasepointercapture/index.md

@@ -46,7 +46,7 @@ None ({{jsxref("undefined")}}).
 ## Examples
 
 This example sets pointer capture on a {{HtmlElement("div")}} when you press down on
-it. This lets you slide the element horizontally, even when you pointer moves outside of
+it. This lets you slide the element horizontally, even when your pointer moves outside of
 its boundaries.
 
 ### HTML