add one description as an example [netlify-build]

Author: forstisabella

src/_includes/content/delivery-overview-discards.html

@@ -31,7 +31,7 @@
     <tr class="settingRow failed-ingest">
       <td colspan="4" style="font-weight: bold; background-color:fafbff;font-size: 10px; text-transform: uppercase;"
         id="settingRow">
-        Failed on Ingest</td>
+        Failed on Ingest: Events that Segment received, but were dropped due to internal data validation rules</td>
     </tr>
     <tr class="settingRow failed-ingest" id="settingRow">
       <td>Empty batch result</td>