README: minor typos

[xakon]

No description provided.

[coriolinus]

@xakon Thanks for contributing this! Unfortunately, this will break our CI if you just make the changes here. Before I merge this, it will be necessary to update the problem specifications repo. Are you willing to also open a PR there?

[ZapAnton]

Is it the text from config/exercise_readme.go.tmpl?

Shouldn't it be enough to update the file and run configlet generate?

[coriolinus]

@ZapAnton Good catch! Yes, I'd missed the origin of that particular text. @xakon please disregard my previous; we can handle this within this repo. Steps to finish this:

1. Update config/exercise_readme.go.tmpl to fix the typos in the template.
2. Ensure bin/configlet exists; if not, run bin/fetch-configlet to get it.
3. Run bin/configlet generate . from the project root to regenerate all exercise readmes to fix the issue everywhere.

[xakon]

Hello!

Yes, @coriolinus, I would happily make a PR to the problem specification repo. I didn't know in the beginning how the whole process is being set, my apologies on that. On the other hand, it is a good opportunity for me to get introduced to it!

[xakon]

Based on the instructions of @coriolinus, I updated the template README. As a result, the typos are propagated to all exercises. Unfortunately, the PR has become huge now!

[coriolinus]

Don't worry about the size; this sort of changeset is pretty easy to review. Thanks for doing this work @xakon!

Assuming Travis passes, the next step will be for this to sit for a while to give other track maintainers time to review this. Unless there are objections, I'll merge this not later than Friday the 20th. If on Saturday I still haven't, please feel free to ping me a reminder.