clarify no-new-dictionaries in some more places

.github/PULL_REQUEST_TEMPLATE.md

@@ -6,7 +6,7 @@ tl;dr (you should still read the full list though):
 * re-use existing mechanisms / code
 * low performance impact
 * make it a draft if you still want to work on it
-* don't do translation PRs
+* no translations or dictionaries
 
 Further
 * When the PR contains "fixes" <issue number>, the related issue will be linked and automatically closed if the PR is merged (also works for other words like "fix", "resolve", "resolves", "closes", ...)

CONTRIBUTING.md

@@ -33,3 +33,6 @@ See make-emoji-keys tool [README](tools/make-emoji-keys/README.md).
 # Translations
 Translations can be added using [Weblate](https://translate.codeberg.org/projects/heliboard/). You will need an account to update translations and add languages. Add the language you want to translate to in Languages -> Manage translated languages in the top menu bar.
 Updating translations in a PR will not be accepted, as it may cause conflicts with Weblate translations.
+
+# Dictionaries
+No new dictionaries will be added to this app. Please submit dictionaries and the wordlist to the [dictionaries repository](https://codeberg.org/Helium314/aosp-dictionaries)