[fix] Update datasets in metadata

README.md

@@ -1,7 +1,7 @@
 ---
 title: eval_keyphrase
 datasets:
--  
+- ''
 tags:
 - evaluate
 - metric
@@ -17,7 +17,7 @@ pinned: false
 ***Module Card Instructions:*** *Fill out the following subsections. Feel free to take a look at existing metric cards if you'd like examples.*
 
 ## Metric Description
-*Give a brief overview of this metric, including what task(s) it is usually used for, if any.*
+Metric to evaluate the text2text generation task, where the format is the sequence of string. e.g., keyphrase
 
 ## How to Use
 *Give general statement of how to use the metric*