Update README.md

README.md

@@ -7,6 +7,7 @@ language:
 pretty_name: 'Ames Iowa: Alternative to the Boston Housing Data Set'
 size_categories:
 - 1K<n<10K
+license: unknown
 ---
 
 # Dataset Card for 'Ames Iowa: Alternative to the Boston Housing Data Set'
@@ -79,6 +80,4 @@ The original author of the dataset obtain the raw data directly from the Ames, I
   year={2011},
   publisher={Taylor \& Francis}
 }
-```
-
-
+```