Fix the end of the third section in docs/gettingstarted.md (+ the Hello World code blocks), and add a note about primitive types.

docs/gettingstarted.md

@@ -1,14 +1,14 @@
 ## 1 - Variables
 Variables defined using #= can't be changed (they are "final"), while the ones affected using the normal operator (=) can.
 ```
-helloworld #= "Hello World"
+helloworld #= "Hello, World!"
 ```
 
 ## 2 - (Anonymous) Functions
 You can make an anonymous functions using the following syntax:
 ```
 getHelloWorld: ~String => {
-  return "Hello World!"
+  return "Hello, World!"
 }
 ```  
 <sub>`~String` can be omitted, see [#3](#3---types).</sub>
@@ -32,13 +32,15 @@ as_main helloWorld >> {}
 ## 3 - Types
 Types are *inferred*, which means that specifying types of variables or returned values is optional.
 
+<sup>Note: While primitives types (`String`, `int`, `double`, `boolean`, `float`) will be transpiled to their equivalents for the target of the transpiler, this is not the case for other types.<sup>
+
 Every variable has a static type by default; it is possible to make a **non-final** variable dynamic by adding the `dyn`/`dynamic` attribute:
 ```
 dyn helloWorld = 0
-helloWorld = "Hello World!"
+helloWorld = "Hello, World!"
 ```
 The attributes mentioned above can also be used as a return type for functions/anonymous functions:
 ```
-helloWorld: ~dynamic => {}
-dyn helloWorld >> {}
+helloWorld: ~dynamic => { return 0 }
+dyn helloWorld >> { return 0 }
 ```