fixed script4 of grep to implement 10 lines

Author: MansoorM11

individual-shell-tools/grep/script-04.sh

@@ -4,4 +4,4 @@ set -euo pipefail
 
 # TODO: Write a command to output every line in dialogue.txt that does not contain the word "Hello" (regardless of case).
 # The output should contain 10 lines.
-grep -i -v -c 'Hello' ./dialogue.txt
+grep -i -v 'Hello' ./dialogue.txt