Few doc fixes (#194)

Also, the doc says `@param img` but declaration has `mlx_image image`
which is a mismatch, I’m not sure what to do here, so I’m leaving it
untouched.

[This page](https://macrolibx.kbz8.me/guides/text/) of the docs should
be updated too as `mlx_set_font` and `mlx_set_font_scale` don't take a
`mlx_window` anymore.

includes/mlx.h

@@ -338,7 +338,7 @@ MLX_API mlx_image mlx_new_image(mlx_context mlx, int width, int height);
  * @param mlx        Internal MLX application
  * @param filename   Path to the png file
  * @param width      Get the width of the image
- * @param heigth     Get the height of the image
+ * @param height     Get the height of the image
  *
  * @return (mlx_image) An opaque handler to the internal image or MLX_NULL_HANDLE (0x0) in case of error
  */
@@ -407,7 +407,6 @@ MLX_API void mlx_string_put(mlx_context mlx, mlx_window win, int x, int y, mlx_c
  * @brief            Loads a font to be used by `mlx_string_put`
  *
  * @param mlx        Internal MLX application
- * @param win        Internal window
  * @param filepath   Filepath to the font or "default" to reset to the embedded font
  */
 MLX_API void mlx_set_font(mlx_context mlx, char* filepath);
@@ -416,7 +415,6 @@ MLX_API void mlx_set_font(mlx_context mlx, char* filepath);
  * @brief            Loads a font to be used by `mlx_string_put` and scales it
  *
  * @param mlx        Internal MLX application
- * @param win        Internal window
  * @param filepath   Filepath to the font or "default" to reset to the embedded font
  * @param scale      Scale to apply to the font
  */