Remove 'rippled - ' prefix from Phase 9 dashboard titles

Rename dashboards to follow Title Case convention without redundant
service prefix (all dashboards are already in the 'rippled' folder):
- "rippled - Fee Market & TxQ" -> "Fee Market & TxQ"
- "rippled - Job Queue Analysis" -> "Job Queue Analysis"
- "rippled - RPC Performance (OTel)" -> "RPC Performance (OTel)"

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

docker/telemetry/grafana/dashboards/rippled-fee-market.json

@@ -332,7 +332,7 @@
   },
   "timepicker": {},
   "timezone": "browser",
-  "title": "rippled - Fee Market & TxQ",
+  "title": "Fee Market & TxQ",
   "uid": "rippled-fee-market",
   "version": 1
 }

docker/telemetry/grafana/dashboards/rippled-job-queue.json

@@ -359,7 +359,7 @@
   },
   "timepicker": {},
   "timezone": "browser",
-  "title": "rippled - Job Queue Analysis",
+  "title": "Job Queue Analysis",
   "uid": "rippled-job-queue",
   "version": 1
 }

docker/telemetry/grafana/dashboards/rippled-rpc-perf.json

@@ -368,7 +368,7 @@
   },
   "timepicker": {},
   "timezone": "browser",
-  "title": "rippled - RPC Performance (OTel)",
+  "title": "RPC Performance (OTel)",
   "uid": "rippled-rpc-perf",
   "version": 1
 }