Update 01-intro.md

[tbrowntech]

Fixing some grammatical errors

Instructions

Thanks for contributing! ❤️

Keep in mind that lesson maintainers are volunteers and it may take them some time to respond to your contribution.
To ensure that the right people get notified, you can tag some of the last contributors with @githubname.

Although not all contributions can be incorporated into the lesson materials, we appreciate your time and effort to improve the curriculum. If you have any questions about the lesson maintenance process or would like to volunteer your time as a contribution reviewer, please contact the HSF training convenors (contacts here).

You may delete these instructions from your pull request.

- HSF Training

[welcome]

Thanks for opening your first pull request here 🚀! If you have any questions, feel free to mention one of the conveners, previous contributors, or attend our weekly meeting (see
our homepage). Also, sometimes PRs go unnoticed, so don't hesitate to @mention some of us, if we do not come back to you within a few days.

[welcome]

Congrats on merging your first pull request 🎉! We greatly appreciate it.
You might be eligible to be added to the HSF Training Community page (see the instructions on the page for how to create a profile). If you already have created a profile previously, make sure you're also added to the current year. If this repository features a list of contributors at the bottom of the readme, you might also be eligible to add yourself there.

[henryiii]

Thanks!