Fix word (#8)

modules/chapter1/pages/section1.adoc

@@ -6,7 +6,7 @@ Many problems, like recognizing people and objects or understanding human speech
 
 Machine Learning can be a solution to this as we can train an algorithm to automatically learn from data or from experience. It allows computers to learn and make predictions or decisions without being explicitly programmed.
 
-It involves applying mathematical algorithms on a dataset to recognize patterns and make informed predictions or decisions on new, unseen data. The result is a trained model that can be used in production settings for continued inference and automation.
+It involves applying mathematical algorithms on a data set to recognize patterns and make informed predictions or decisions on new, unseen data. The result is a trained model that can be used in production settings for continued inference and automation.
 
 Machine Learning has revolutionized various industries, including healthcare, finance and transportation.