update dev practices

docs/dev-practices.md

@@ -72,11 +72,14 @@ queries and rules. Our queries are linted through clj-kondo and
 [datalog-parser](https://github.com/lambdaforge/datalog-parser). clj-kondo will
 error if it detects an invalid query.
 
-### Invalid translations
+### Translations
 
 Our translations can be configured incorrectly. We can catch some of these
 mistakes [as noted here](./contributing-to-translations.md#fix-mistakes).
 
+Punctuation and delimiting characters (e.g `:`, `:`, `?`) should be part of the translatable string.
+Those characters and their position may vary depending on the language.
+
 ### Spell Checker
 
 We use [typos](https://github.com/crate-ci/typos) to spell check our source code.