You should use single quotes
' or double quotes
" around the URL in this case (and in general):
From now, you should use this method in general when you use a string which contain parentheses as argument in a command. That is because parentheses are used for grouping by the shell such that they are not communicated in any way to a command. So, the bash shell will give you a syntax error:
$ echo some (parentheses)
bash: syntax error near unexpected token `('
$ echo 'some (parentheses)'