chore: Merge pull request #930 from Alkaid-C/{channel_series_example_doc_fix}

添加缺失的channel_series.py的API示例文档

Author: Nemo2011

docs/examples/channel_series.md

@@ -0,0 +1,22 @@
+# 示例：获取一个合集中的所有视频
+
+````
+import asyncio
+from bilibili_api import channel_series, Credential
+
+
+#定义合集或列表id。例如一个网址为https://space.bilibili.com/111/lists/222?type=series的合集，其id为222。
+series_id=0
+
+async def main():
+	#实例化credential 如果只是获取视频，只需给予sessdata即可
+	credential=Credential(sessdata='')
+	#实例化series
+    series = channel_series.ChannelSeries(id_=series_id, credential=cre)
+    #获取合集中所有的视频信息
+    video_list = await series.get_videos()
+	
+
+asyncio.run(main())
+```
+````