Close out HTTP upload documentation

docs/operations.md

@@ -92,28 +92,29 @@ pipelines:
   - id: reports
     source:
       backend: http_upload
-      token_env: REPORTS_UPLOAD_TOKEN
+      token_env: DISTRIBUTOR_EXAMPLE_UPLOAD_TOKEN
     destinations:
       - id: archive
         backend: local
         path: /srv/reports/archive
 ```
 
-Create `/run/secrets/distributor/REPORTS_UPLOAD_TOKEN` or set the real process
-environment variable before starting the server. Distributor does not read
-literal upload tokens from YAML.
+Create `/run/secrets/distributor/DISTRIBUTOR_EXAMPLE_UPLOAD_TOKEN` or set the
+real process environment variable before starting the server. Distributor does
+not read literal upload tokens from YAML.
 
-Start the server:
+Start the maintained local example:
 
 ```sh
-go run ./cmd/distributor serve --config <config-path>
+DISTRIBUTOR_EXAMPLE_UPLOAD_TOKEN=<token> \
+  go run ./cmd/distributor serve --config examples/http-upload-local.yml
 ```
 
 Submit a tar or tar.gz source bundle:
 
 ```sh
 curl -X POST http://127.0.0.1:8080/upload \
-  -H "Authorization: Bearer $REPORTS_UPLOAD_TOKEN" \
+  -H "Authorization: Bearer $DISTRIBUTOR_EXAMPLE_UPLOAD_TOKEN" \
   -H "Content-Type: application/gzip" \
   --data-binary @bundle.tar.gz
 ```