pipeline: output: logdna: add documentation for logdna_endpoint config param (#1236)

Signed-off-by: Mirko Lazarevic <[email protected]>

Author: mirko-lazarevic

pipeline/outputs/logdna.md

@@ -32,6 +32,11 @@ Before to get started with the plugin configuration, make sure to obtain the pro
       <td style="text-align:left">LogDNA TCP Port</td>
       <td style="text-align:left">443</td>
     </tr>
+    <tr>
+      <td style="text-align:left">logdna_endpoint</td>
+      <td style="text-align:left">LogDNA ingestion endpoint</td>
+      <td style="text-align:left">/logs/ingest</td>
+    </tr>
     <tr>
       <td style="text-align:left">api_key</td>
       <td style="text-align:left">API key to get access to the service. This property is <b>mandatory</b>.</td>