Update pipeline/outputs/openobserve.md

Co-authored-by: Adam Locke <[email protected]>
Signed-off-by: Chaitanya Sistla <[email protected]>
Signed-off-by: Chaitanya Sistla <[email protected]>

Author: 2 people

pipeline/outputs/openobserve.md

@@ -24,7 +24,7 @@ types as mentioned in the
 | HTTP_Passwd          | Required: Password for HTTP authentication.                                                                                                                                                                                                                                                                                                                                                       |     _none_                             |
 | URI        | Required: The API path used to send logs.                                                                                                                                                                                                                                                                                                                                                           |         `/api/default/default/_json`                         |
 | Format        | _Required_ - The format of the log payload. OpenObserve expects json.                                                                                                                                                                                                                                                                                                                                                           |         `json`                         |
-| json_date_key   | _Optional_ The JSON key used for timestamps in the logs.                                                                                                                                                                                                                                                                                                                                                                                                                  | `timestamp`                      |
+| json_date_key   | Optional: The JSON key used for timestamps in the logs.                                                                                                                                                                                                                                                                                                                                                                                                                  | `timestamp`                      |
 | json_date_format   | _Optional_ The format of the date in logs. OpenObserve supports iso8601.                                                                                                                                                                                                                                                                                                                                                                                                                  | `iso8601`                      |
 | include_tag_key | If enabled, a tag is appended to output. The key name is used `tag_key` property.                                                                                                                                                                                                                                                                                                                                                          | `false`                          |