In current, ddoc does not strip leading spaces in code section.

This code:
===============
/**
 *  Example:
 *  ---
 *  import std.stdio;
 *  writeln("Hello world!");
 *  if (test) {  
 *    writefln("D programming language");
 *  }
 *  ---
 */
void foo(){}
===============

Outputs:
===============
void foo();
Example:
  import std.stdio;
  writeln("Hello world!");
  if (test) {
    writefln("D programming language");
  }
===============

Should be:
===============
void foo();
Example:
import std.stdio;
writeln("Hello world!");
if (test) {
  writefln("D programming language");
}
===============