cairo-sys: align win32-surface feature gates with those in cairo

[fengalin]

fixes error:

error[E0425]: cannot find function `cairo_win32_surface_create_with_format` in module `ffi`

  --> src/win32_surface.rs:50:38
   |
50 |             Self::from_raw_full(ffi::cairo_win32_surface_create_with_format(

   |                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: a function with a similar name exists: `cairo_win32_surface_create_with_ddb`

when running:

cargo doc --features "dox"

[sdroege]

@GuillaumeGomez 👍

[GuillaumeGomez]

Thanks!