Update SA1000.md

Author: Youssef1313

documentation/SA1000.md

@@ -33,6 +33,7 @@ The `new` and `stackalloc` keywords should always be followed by a space, except
 
 * The `new` or `stackalloc` keyword is used to create a new implicitly-typed array. In this case there should be no
   space between the keyword and the opening array bracket.
+* The `new` keyword is part of implicit object creation (target-typed new). In this case there should be no space between the keyword and the opening parenthesis.
 * The `new` keyword is part of a generic type constraint. In this case there should be no space between the `new`
   keyword and the opening parenthesis.