Update aws-kinesis-firehose-logs-source.md (#5652)

Author: JV0812

docs/send-data/hosted-collectors/amazon-aws/aws-kinesis-firehose-logs-source.md

@@ -64,7 +64,7 @@ To create an AWS Kinesis Firehose for Logs Source:
     **Enable Timestamp Parsing.** This option is selected by default. If it's deselected, no timestamp information is parsed at all.
 
    * **Time Zone.** There are two options for Time Zone. You can use the time zone present in your log files, and then choose an option in case time zone information is missing from a log message. Or, you can have Sumo completely disregard any time zone information present in logs by forcing a time zone. Whichever option you choose, it's important to set the proper time zone. If the time zone of logs cannot be determined, Sumo assigns logs UTC; if the rest of your logs are from another time zone your search results will be affected.
-   * **Timestamp Format.** By default, Sumo will automatically detect the timestamp format of your logs. However, you can manually specify a timestamp format for a source. See [Timestamps, Time Zones, Time Ranges, and Date Formats](/docs/send-data/reference-information/time-reference for more information.
+   * **Timestamp Format.** By default, Sumo Logic will automatically detect the timestamp format of your logs. However, to manually specify a timestamp format for a source, contact Sumo Logic support.
 
     **Enable Multiline Processing.** See [Collecting Multiline Logs](/docs/send-data/reference-information/collect-multiline-logs) for details on multiline processing and its options. Use this option if you're working with multiline messages (for example, log4J messages or exception stack traces). Deselect this option if you want to avoid unnecessary processing when collecting single-message-per-line files (for example, Linux system.log).