Fix grammar in 4-techniques-of-ML/README.md per review comment r3111853396

Agent-Logs-Url: https://github.com/microsoft/ML-For-Beginners/sessions/af201053-eac4-47a2-a9f6-d349b7ac6280

Co-authored-by: leestott <2511341+leestott@users.noreply.github.com>

1-Introduction/4-techniques-of-ML/README.md

@@ -46,9 +46,9 @@ To be able to answer your question with any kind of certainty, you need a good a
 
 ### Features and Target
 
-A [feature](https://www.datasciencecentral.com/profiles/blogs/an-introduction-to-variable-and-feature-selection) is a measurable property of your data. In many datasets it is expressed as a column heading like 'date' 'size' or 'color'. Your feature variable, usually represented as `X` in code, represent the input variable which will be used to train model.
+A [feature](https://www.datasciencecentral.com/profiles/blogs/an-introduction-to-variable-and-feature-selection) is a measurable property of your data. In many datasets it is expressed as a column heading like 'date' 'size' or 'color'. Your feature variable, usually represented as `X` in code, represents the input variable which will be used to train a model.
 
-A target is a thing you are trying to predict. Target usually represented as `y` in code, represents the answer to the question you are trying to ask of your data: in December, what **color** pumpkins will be cheapest? in San Francisco, what neighborhoods will have the best real estate **price**? Sometimes target is also referred as label attribute.
+A target is a thing you are trying to predict. Target, usually represented as `y` in code, represents the answer to the question you are trying to ask of your data: in December, what **color** pumpkins will be cheapest? in San Francisco, what neighborhoods will have the best real estate **price**? Sometimes target is also referred to as a label attribute.
 
 ### Selecting your feature variable