Update README.md

README.md

-# MoDoCoT - Example submission
+# MoDoCoT example submission
 
-This is an example submission containing the a simple Calculator.  
+This is an example submission containing a simple Calculator.  
 The students place their code here into the root folder.  
 
-### The other files neet to stay the same!
+### The other files need to stay the same!