corrected case for variable

domainjoin.sh

@@ -8,7 +8,7 @@ fi
 read -e -p "Enter Domain Name: " -i "home.johnhgaunt.com" domain
 read -e -p "Enter netBIOS Name: " -i "GAUNT" netbiosname
 read -e -p "Enter Domain Admin Username: " -i "jgaunto" username
-read -e -s -p "Enter ${USERNAME}'s Password: " password
+read -e -s -p "Enter ${username}'s Password: " password
 
 # get OS ditro and version
 OS=$(hostnamectl | awk '/Operating System/ {print $3}')