Just remove some spaces (#7681)

**What this PR does / why we need it**:

**Which issue(s) this PR fixes**:
Fixes #<issue number>

**Special notes for your reviewer**:

**Checklist**
- [ ] Reviewed the `CONTRIBUTING.md` guide
- [ ] Documentation added
- [ ] Tests updated
- [ ] `CHANGELOG.md` updated
- [ ] Changes that require user attention or interaction to upgrade are
documented in `docs/sources/upgrading/_index.md`

production/docker/config/promtail.yaml

@@ -2,14 +2,14 @@ server:
     http_listen_port: 9080
     grpc_listen_port: 0
     log_level: "info"
-  
+
 positions:
     filename: /tmp/positions.yaml
-  
+
 clients:
     - url: http://loki-gateway:80/loki/api/v1/push
       tenant_id: docker
-  
+
 scrape_configs:
   - job_name: generated-logs
     static_configs:
@@ -25,4 +25,4 @@ scrape_configs:
             http_status: "status"
       - labels:
           http_method:
-          http_status:
+          http_status: