Update document/js-api/index.bs

Co-authored-by: Ioanna M Dimitriou H <[email protected]>

Author: Ms2ger

document/js-api/index.bs

@@ -1287,7 +1287,7 @@ specification to distinguish exceptions originating from JavaScript.
 For any [=associated store=] |store|, the result of
 [=tag_parameters=](|store|, [=JavaScript exception tag=]) must be « [=externref=] ».
 
-Issue: Should it be possible for `br_on_exn` to extract the payload from an exception with this tag?
+ Issue: Should it be possible for `catch <JS-exception-tag>` to extract the payload from an exception with this tag?
 
 <div algorithm>