Important doc fix.
diff --git a/include/freetype/freetype.h b/include/freetype/freetype.h
index 88083d5..1b3e603 100644
--- a/include/freetype/freetype.h
+++ b/include/freetype/freetype.h
@@ -1836,7 +1836,7 @@
    *        and add it to `origin_x'>
    *
    *       origin_x += slot->advance.x;
-   *       origin_x += slot->rsb_delta - slot->lsb_delta;
+   *       origin_x += slot->lsb_delta - slot->rsb_delta;
    *     endfor
    *   ```
    *