Update module-3.md
Update module-3.md

updated typos for follow-alongs
LaunchCodeEducation/cs50x-live,LaunchCodeEducation/cs50x-stlouis,LaunchCodeEducation/cs50x-live,LaunchCodeEducation/cs50x-kansascity,LaunchCodeEducation/cs50x-maryville,LaunchCodeEducation/cs50x-live,LaunchCodeEducation/cs50x-maryville,LaunchCodeEducation/cs50x-kansascity,LaunchCodeEducation/cs50x-maryville,LaunchCodeEducation/cs50x-live,LaunchCodeEducation/cs50x-kansascity,LaunchCodeEducation/cs50x-maryville,LaunchCodeEducation/cs50x-kansascity,LaunchCodeEducation/cs50x-stlouis,LaunchCodeEducation/cs50x-stlouis,LaunchCodeEducation/cs50x-kansascity,LaunchCodeEducation/cs50x-stlouis,LaunchCodeEducation/cs50x-maryville,LaunchCodeEducation/cs50x-stlouis