Links with spaces in the target don't work

[Deleted user]

Put this into http://parsedown.org/extra/

[google](https://www.google.com)

[google]( https://www.google.com )

The first link works fine, but the second link just shows up as plain text. The second link works fine in PHP Markdown Extra but not in Parsedown Extra.

[Emanuil Rusev]

@aidantwoods

Do you want to create a PR for this?

[Aidan Woods]

@erusev can take a look :)