Update linked-audiences-limits.md

src/engage/audiences/linked-audiences-limits.md

@@ -31,11 +31,12 @@ Name | Limit | Details
 ---- | ----- | --------
 RETL row limit | 150 million | The audience compute fails if the total output exceeds the limit. 
 RETL column limit | 500 columns | The audience compute fails if the number of columns exceeds the limit. 
-Global concurrent audience runs | 5 total within any given space | New audience runs are queued once the limit is reached and will start execution once prior audience runs complete.
+Global concurrent audience runs | 5 total within any given space | New audience runs are queued once the limit is reached and will start execution once prior audience runs complete. If you have need a higher global concurrent audience runs limit, please contact friends@segment.com
 Event Size | 32 KB | Segment doesn’t emit messages for profiles whose total related entities and enrichments exceed the limit.
 Data Graph depth | 6 | You can't save a Data Graph if you exceed the limit. 
 Preview size | 3K rows | The maximum number of rows you can have to generate a preview. The preview fails if you bring back too many entities. 
 Entity value type ahead cache | Up to 100 unique values | The maximum number of entity values Segment stores in cache. 
 Entity columns | Up to 1000 unique values | The maximum number of entity property columns Segment surfaces in the condition builder.
-Run frequency | 15 minutes (this is the fastest time) | You can’t configure more frequency syncs. You can select **Run Now** to trigger runs, but you’re limited by Profiles Sync for when new data syncs back to the data warehouse. 
+Run frequency | 15 minutes (this is the fastest time) | You can’t configure more frequency syncs. You can select **Run Now** to trigger runs, but you’re limited by Profiles Sync for when new data syncs back to the data warehouse.
+Destination Mappings | Up to 100 mappings | You can set up to 100 action destination mappings per destination instance.