Fix typo in docs example (#121206) (#121211)

(cherry picked from commit 3669e061d42d378a97653c1e884d9cd04efca96f)

docs/reference/esql/esql-async-query-stop-api.asciidoc

@@ -23,7 +23,7 @@ field set to `true`.
 
 [source,console]
 ----
-POST /query/async/FkpMRkJGS1gzVDRlM3g4ZzMyRGlLbkEaTXlJZHdNT09TU2VTZVBoNDM3cFZMUToxMDM=/stop
+POST /_query/async/FkpMRkJGS1gzVDRlM3g4ZzMyRGlLbkEaTXlJZHdNT09TU2VTZVBoNDM3cFZMUToxMDM=/stop
 ----
 // TEST[skip: no access to query ID]