add: exit code to the docs, fix usage in the docs

docs/documentation.md

@@ -84,7 +84,7 @@ The syntax is very close to x86 Intel Assembly. Here is a list of the operands a
 | **jna** foo      | Jumps to `foo` if `cmp` didn't return `CMP_ABOVE` | no |
 | **jmp** foo      | Jumps to `foo`                                    | no |
 | **ret**          | Returns from the callee to the caller             | no |
-| **end**          | Ends the program                                  | no |
+| **end**          | Ends the program, exit code is EAX                | no |
 | **pop** a1       | Pops the first element of the stack into a1       | no |
 | **push** 69      | Pushes the value 69 to the top of the stack       | no |
 | **call** put     | Calls the `put` API                               | yes/no |
@@ -120,7 +120,7 @@ Here is a list of all the errors you can encounter and how to fix them :
 * `stack underflow on line X` : you poped to many times without pushing.
 
 ## Running a script
-Usage : `pasm.exe script.pasm`.
+Usage : `pasm.exe script.pasm [-d/--debug]`.
 
 ## Contributing
 Please message me over on discord at `_.patate` if you want me to add anything to the docs.<br>