chore: many trivial spelling and layout fixes (#3008)

Co-authored-by: Gabor Kiss-Vamosi <kisvegabor@gmail.com>

docs/porting/indev.md

@@ -142,7 +142,7 @@ void encoder_with_keys_read(lv_indev_drv_t * drv, lv_indev_data_t*data){
 If a button is pressed it will simulate the pressing on the assigned coordinate. (Similarly to a touchpad)
 
 To assign buttons to coordinates use `lv_indev_set_button_points(my_indev, points_array)`.   
-`points_array` should look like `const lv_point_t points_array[] =  { {12,30},{60,90}, ...}`
+`points_array` should look like `const lv_point_t points_array[] = { {12,30},{60,90}, ...}`
 
 ``` important::  The points_array can't go out of scope. Either declare it as a global variable or as a static variable inside a function.
 ```