[polaris.shopify.com][/components] Fix Props heading id not mapping to TOC anchor

Author: chloerice

polaris.shopify.com/src/components/PropsTable/PropsTable.tsx

@@ -14,7 +14,7 @@ function PropsTable({ props: { interfaceName, props } }: Props) {
 
   return (
     <div className={styles.PropsTable}>
-      <h2 id="properties">Props</h2>
+      <h2 id="props">Props</h2>
       <p>
         Want to help make this feature better? Please{" "}
         <a href={feedbackUrl}>share your feedback</a>.