Update CONTRIBUTING.md

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

Author: axelboc

CONTRIBUTING.md

@@ -429,7 +429,7 @@ The recommended structure, which can of course be tweaked and expanded as needed
 1. Short introduction to summarise the most significant changes and/or give updates on the projet _(optional)_.
 2. Concise upgrade instructions, typically pointing to detailled procedures in the README and wiki.
 3. New translations, if any (including language code).
-4. New notes, if any, with links to Wikipedia and optionnally justification on why those notes were added (e.g. new/changed inclusion criteria)
+4. New notes, if any, with links to Wikipedia and optionally justification on why those notes were added (e.g. new/changed inclusion criteria)
 5. Changes to country names, capitals and supplementary info.
 6. Changes to maps and flags.
 7. Other changes, for instance to the structure of the deck (tags, description, etc.), the documentation (when significant), or the BrainBrew recipes and development tool chain (if relevant to power users).