Fix representation-learning short_description length

Author: Tariolle

topics/representation-learning/index.md

@@ -1,6 +1,6 @@
 ---
 display_name: Representation learning
-short_description: Representation learning is a set of techniques in machine learning that automatically discover compact and meaningful features from raw data.
+short_description: Representation learning is a set of machine learning techniques that automatically discover meaningful features from raw data.
 topic: representation-learning
 wikipedia_url: https://en.wikipedia.org/wiki/Feature_learning
 ---