Update README-LanguageDraft-2.0.md

Author: andreasdr

README-LanguageDraft-2.0.md

@@ -45,7 +45,7 @@
     end
 ```
 
-## 1.3. Structures, which are compound data type definitions including data type definitions, used for data validation
+## 1.3. Structures, which are compound data types, including sub data type definitions, used for data validation
 
 ```
     # maybe, not sure if required 100%