Portenta Vision Shield: Bitmap to SD Card tutorial sketch update[PC-969] (#489)

* Update sketch and alignt content to it

Co-authored-by: sebromero <s.romero@arduino.cc>

* Fix typo

* Add blink function

* Update content/hardware/04.pro/shields/portenta-vision-shield/tutorials/camera-to-bitmap-sd-card/content.md

* Update content/hardware/04.pro/shields/portenta-vision-shield/tutorials/camera-to-bitmap-sd-card/content.md

* Update content/hardware/04.pro/shields/portenta-vision-shield/tutorials/camera-to-bitmap-sd-card/content.md

Co-authored-by: Sebastian Romero <s.romero@arduino.cc>

* Update full sketch

* Update full sketch

* First person plural removal

* Update full sketch

* Change title and fix typo

Co-authored-by: sebromero <s.romero@arduino.cc>

Author: marqdevx