Update TODO_MAJOR.md

docs/TODO_MAJOR.md

@@ -4,7 +4,7 @@ Major versions released typically when API changes are required
 ## Contributing
 Please create an issue to suggest a new feature instead of adding pull request to this file.
 
-## v6 (released at: in progrss)
+## v6 (released on: in progrss)
 - [ ] lv_img_upscale removal (generate image with with opacity instead)
 - [ ] disp_map and disp_fill removal
 - [ ] disp_flush, mem_blend, mem_fill rework: usea lv_area_t as parameter an GPU support 2D area
@@ -13,7 +13,7 @@ Please create an issue to suggest a new feature instead of adding pull request t
 - [ ] multiple display support
 - [ ] lv_ufs removal (was required only in the the old image system)
 
-## v5 (released at: 20.12.2017)
+## v5 (released on: 20.12.2017)
 **Architectural changes**
 - [x] Rename repository from *proj_pc* to *pc_simulator*
 - [x] Integrate *hal* in LittlevGL as a normal folder