Merge pull request #262106 from vicancy/patch-10

Update signalr-howto-use.md

Author: prmerger-automator[bot]

articles/azure-signalr/signalr-howto-use.md

@@ -258,7 +258,7 @@ You can increase this value to avoid client disconnect.
 #### `MaxPollIntervalInSeconds`
 
 - Default value is `5`
-- This option defines the max poll interval allowed for `LongPolling` connections in Azure SignalR Service. If the next poll request doesn't come in within `MaxPollIntervalInSeconds`, Azure SignalR Service cleans up the client connection. Note that Azure SignalR Service also cleans up connections when cached waiting to write buffer size is greater than `1Mb` to ensure service performance.
+- This option defines the max idle time allowed for inactive connections in Azure SignalR Service. In ASP.NET SignalR, it applies to long polling transport type or reconnection. If the next `/reconnect` or `/poll` request doesn't come in within `MaxPollIntervalInSeconds`, Azure SignalR Service cleans up the client connection. Note that Azure SignalR Service also cleans up connections when cached waiting to write buffer size is greater than `1Mb` to ensure service performance.
 - The value is limited to `[1, 300]`.
 
 ### Sample