Fix bad test string in url_test.go.
Fix bad test string in url_test.go.

Qwiklabs/codelab-tools,Qwiklabs/codelab-tools,googlecodelabs/tools,googlecodelabs/tools,Qwiklabs/codelab-tools,googlecodelabs/tools,Qwiklabs/codelab-tools,googlecodelabs/tools