HLS intersect: a typo in the header comments
* See the introductions of Hash function:
* https://en.wikipedia.org/wiki/Hash_function
* And Hash table:
- * https://en.wikipedia.org/wiki/hash_ptr_table
+ * https://en.wikipedia.org/wiki/hash_table
*
* 2) Sort both source tables, and then do intersection
* Use C build in library qsort (quick sort)
