Update alignment.js

[phibersoft]

Even in a very simple code, these parts fail. It is also very misleading to throw an error about the "justifyLastLine" object for all processes. Please remove these sections, "justifyLastLine" is defined and throws error even if its type is boolean.

Code

wb.createStyle({ alignment: { horizontal: "center" }});

Output : TypeError : justifyLastLine aligment option must be of type boolean