[Bug/Assistance] Fix example code for an os task

[hannagabor]

In data/os_interaction/data/dev.json, the example code for task "Find out count of linux users on this system who belong to at least 4 groups." is incorrect. The current example checks for users who belong to exactly 4 groups instead of at least 4 groups.

So instead of this:

•        "example": "getent passwd | cut -d: -f1 | while read user; do groups $user | cut -d ':' -f 2 | tr -s ' ' | sed 's/^ *//;s/ *$//' | tr ' ' '\\n' | grep -v '^$' | wc -l | grep -q -w '4' && echo $user; done | wc -l"
  

it should be this:

•        "example": "getent passwd | cut -d: -f1 | while read user; do groups $user | cut -d ':' -f 2 | tr -s ' ' | sed 's/^ *//;s/ *$//' | tr ' ' '\\n' | grep -v '^$' | tr '\\' '\n' | wc -l | grep -q -P '[4-9]|\\d{2,}' && echo $user; done | wc -l"
  

I'm happy to send a PR, but I don't have access to the repo.