[Docs] Fix path of /cas/ example in remote cache docs
The documentation uses as the example remote cache URL. This fixes the `PUT` example to include the `/cache` root.
Closes
@@ -208,7 +208,7 @@ A Bazel request to upload an output file with the SHA256 hash `15e2b0d3...` to
the CAS will look as follows:
```http
-PUT /cas/15e2b0d3c33891ebb0f1ef609ec419420c20e320ce94c65fbc8c3312448eb225 HTTP/1.1
+PUT /cache/cas/15e2b0d3c33891ebb0f1ef609ec419420c20e320ce94c65fbc8c3312448eb225 HTTP/1.1
Host: localhost:8080
Accept: */*
Content-Length: 9
