Update README.md

Author: Amir-Shamsi

README.md

@@ -69,7 +69,7 @@ _Below is an example of how you can clone and run project on your local._
  ```sh
  git clone https://github.com/Amir-Shamsi/cpu-scheduling-algorithm.git
  ```
-2. Install requirement libraries
+2. Install required libraries
  ```sh
  pip install -r requirement-libs.txt
  ```