Fix entire link text not being parsed

lib/gemini.ex

@@ -56,12 +56,12 @@ defmodule Gemini do
           | {:list_item, String.t()}
           | {:quoted, String.t()}
 
-  @link_line_regex ~r/\s*([^\s]+)(?:\s+([^\s]+))?/
+  @link_line_regex ~r/\s*([^\s]+)(?:\s+(.+))?/
 
   @spec parse(String.t()) :: [line()]
 
   def parse(doc) do
-    {lines, _, _} =
+    {lines, _} =
       doc
       |> String.split("\n")
       |> Enum.reduce({[], false}, fn line, {lines, in_preformatting} ->