fix: typos development_notes.md

doc/development_notes.md

@@ -1,3 +1,3 @@
 # Development notes
 
-- When update the translations or localizations in the app, please take a look at the [Translation](./translation.md) page as it have important notes in order to work, if you also adding a feature that add new localizations then you need to the instructions of it in order for the translations to take affect
+- When updating the translations or localizations in the app, please take a look at the [Translation](./translation.md) page as it has important notes in order to work, if you also add a feature that adds new localizations then you need to the instructions of it in order for the translations to take effect