perf(metrics): 更新 matcher 事件指标名称

- 将 "matcher_duration_seconds" 重命名为 "nonebot_matcher_duration_seconds"
- 此更改提高了指标名称的可读性和一致性，便于更好地识别和使用相关数据

Author: suyiiyii

nonebot_plugin_prometheus/metrics.py

@@ -61,7 +61,7 @@ async def handle_bot_disconnect(bot: Bot):
 from prometheus_client import Histogram
 
 matcher_duration_histogram = Histogram(
-    "matcher_duration_seconds",
+    "nonebot_matcher_duration_seconds",
     "Histogram of matcher duration in seconds",
     ["plugin_id", "matcher_name", "exception"],
     buckets=(

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "nonebot-plugin-prometheus"
-version = "0.3.11"
+version = "0.3.12"
 description = "为 NoneBot 和其他插件提供 Prometheus 监控支持"
 readme = "README.md"
 requires-python = ">=3.9, <4.0"