Link within angle brackets was corrupted by table colspan ||

[jeffreytse]

Added two urls within angle brackets to make them as links. It works fine at a normal single cell. While it cannot be turned successfully for a url before the || colspan symbol. Here is the test case:

| Row 4      | <https://www.google.com>    |                              |
|^^          |^^ <https://www.youtube.com> |                              |
| Row 5      | <https://www.google.com>                                  ||

The third url can not be turned into a hyperlink.