typo fix

Author: tkadlec

src/api/reference.md

@@ -276,7 +276,7 @@ String (up to 10KB) that will be stored with the test result and echoed back as
 Set to 0 to disable [Axe](https://github.com/dequelabs/axe-core) accessibility testing. 
 **Default:** 1
 - `axe_categories` <small>optional</small>
-Select which categories of accessibility tests to run. Accepts a comma-delimited list of [Axe-core tags](https://www.deque.com/axe/core-documentation/api-documentation/#axe-core-tags)l
+Select which categories of accessibility tests to run. Accepts a comma-delimited list of [Axe-core tags](https://www.deque.com/axe/core-documentation/api-documentation/#axe-core-tags).
 **Default:** 'wcag2a,wcag2aa'
 :::