[License] Composite expression path with '/' at the end will lead to 404 when user picks up any single expression.

[zhhyu]

For "licenses.nuget.org", when given a valid composite license expression URL, if there is a '/' at the end, when the user chooses any one of single expression to check the content, it will append the single expression to the last '/', which leads to 404 error.

Try: https://licenses.nuget.org/MIT%20AND%20gnuplot/ And then click MIT, it will generate "https://licenses.nuget.org/MIT%20AND%20gnuplot/MIT", which is 404 error.