PR #2050 missed the templating url_for function

[rosstitmarsh]

PR #2050 fixed the url_for functions not allowing "name" as a parameter, but it missed the templating url_for function.

starlette/starlette/templating.py

Line 81 in 01aa49a

def url_for(context: dict, name: str, **path_params: typing.Any) -> URL:

I have a PR ready.

[Kludex]

Push it, please.

[rosstitmarsh]

PR #2127