Update get-involved/contributing.md

Co-authored-by: Copilot <[email protected]>

Author: gildesmarais

get-involved/contributing.md

@@ -34,7 +34,7 @@ After you're done, you can test your feed config by running `bundle exec html2rs
 #### Preferred way: manually
 
 1. Fork this repo and run `bundle install` (you need to have Ruby >= 3.1 installed).
-2. Create a new folder and file following ths convention: `lib/html2rss/configs/<domainname.tld>/<path>.yml`
+2. Create a new folder and file following this convention: `lib/html2rss/configs/<domainname.tld>/<path>.yml`
 3. Create the feed config in the `<path>.yml` file.
 4. Add this spec file in the `spec/html2rss/configs/<domainname.tld>/<path>_spec.rb` file.