designs/2022-06-07-bazel-credential-helpers.md says request has "url", but bazel uses "uri"

https://github.com/bazelbuild/proposals/blob/main/designs/2022-06-07-bazel-credential-helpers.md

> get: Retrieves credentials. The payload provided as standard input to the credential helper will be a json object with a single key url containing the url (including the protocol) to get credentials for ({"url": "..."}).

but
https://github.com/bazelbuild/bazel/blob/c00e8e623b717ecb734feeeb8f268af718b95683/src/main/java/com/google/devtools/build/lib/authandtls/credentialhelper/GetCredentialsRequest.java#L66
> writer.name("uri").value(value.getUri().toString());

Read designs/2022-06-07-bazel-credential-helpers.md and compare its credential request field with the linked GetCredentialsRequest.java implementation in Bazel. Resolve the terminology mismatch so the design document accurately describes the implemented request format, then verify the relevant quoted text is consistent.

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