Bash script with awk to replace text in files

replace-text.sh

#!/bin/bash

echo "Applying changes"
echo ""

declare -a arr=(
  "file1"
  "file2"
)

for file in "${arr[@]}"
do
    echo "Start File: $file"

    awk '/<-- Text For Search Goes here -->/{gsub(<-- Text For Search Goes here -->, "<-- Text to replace here -->")};{print}' $file > tmp && mv tmp $file

    echo "End   File: $file"
    echo ""
done

echo "Changes complete"