refactor(telemetry): drop redundant xrpld- prefix from dashboard uids

Make dashboard uids bare domain names (uid == filename stem) and update
doc references. Grafana links/bookmarks to the old uids will need
refreshing.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

docker/telemetry/grafana/dashboards/consensus-health.json

@@ -1144,5 +1144,5 @@
   },
   "description": "Consensus round health: round and phase durations, proposal and validation rates, close-time agreement, stall detection, and ledger-close cadence.",
   "title": "Consensus Health",
-  "uid": "xrpld-consensus"
+  "uid": "consensus-health"
 }

docker/telemetry/grafana/dashboards/ledger-operations.json

@@ -410,5 +410,5 @@
   },
   "description": "Ledger lifecycle: build rate and duration, transaction apply and store rates, validation rate, and close timing.",
   "title": "Ledger Operations",
-  "uid": "xrpld-ledger-ops"
+  "uid": "ledger-operations"
 }

docker/telemetry/grafana/dashboards/peer-network.json

@@ -283,5 +283,5 @@
     "to": "now"
   },
   "title": "Peer Network",
-  "uid": "xrpld-peer-net"
+  "uid": "peer-network"
 }

docker/telemetry/grafana/dashboards/rpc-performance.json

@@ -528,6 +528,6 @@
     "to": "now"
   },
   "title": "RPC Performance",
-  "uid": "xrpld-rpc-perf",
+  "uid": "rpc-performance",
   "description": "Client RPC service health: per-command request rates, latency, error rates, throughput across pipeline layers, and resource cost."
 }

docker/telemetry/grafana/dashboards/transaction-overview.json

@@ -1031,5 +1031,5 @@
   },
   "description": "Transaction pipeline overview: processing and receive rates, per-type latency and outcomes, queue behaviour, and apply-stage breakdown.",
   "title": "Transaction Overview",
-  "uid": "xrpld-transactions"
+  "uid": "transaction-overview"
 }