A student learning Ruby was trying to make a function. His code should concatenate a passed string name with string "Edabit" and store it in a variable called result. He needs your help to fix this code.
name_string("Mubashir") ➞ "MubashirEdabit"
name_string("Matt") ➞ "MattEdabit"
name_string("ruby") ➞ "rubyEdabit"