fix: cat script 3 and sed script 1

Author: XiaoQuark

individual-shell-tools/cat/script-03.sh

@@ -10,18 +10,3 @@ set -euo pipefail
 # 2 I was tempted to take a bite of it.
 # 3 But this seemed like a bad idea...
 cat -n ../helper-files/helper-3.txt
-
-#!/bin/bash
-
-set -euo pipefail
-
-# TODO: Write a command to output the contents of all of the files inside the helper-files directory to the terminal.
-# Make sure you are only calling `cat` once.
-#
-# The output of this command should be:
-# Once upon a time...
-# There was a house made of gingerbread.
-# It looked delicious.
-# I was tempted to take a bite of it.
-# But this seemed like a bad idea...
-cat ../helper-files/*.txt

individual-shell-tools/sed/script-01.sh

@@ -5,4 +5,4 @@ set -euo pipefail
 # TODO: Write a command to output input.txt with all occurrences of the letter `i` replaced with `I`.
 # The output should contain 11 lines.
 # The first line of the output should be: "ThIs Is a sample fIle for experImentIng wIth sed.".
-sed "s/i/I/" input.txt
+sed "s/i/I/g" input.txt