NIP-11: fix default_limit (#2049)

Author: alexgleason

11.md

@@ -162,7 +162,7 @@ a specific niche kind or content. Normal anti-spam heuristics, for example, do n
 
 - `created_at_upper_limit`: 'created_at' upper limit
 
-- `default_limit`: The maximum returned events if you send a filter with the limit set to 0.
+- `default_limit`: The maximum returned events if you send a filter without a `limit`.
 
 ### Event Retention