Changed url to django docs so it points to the stable version (#7628)

Co-authored-by: Karol Onyśko <[email protected]>

Author: konysko

docs/api-guide/relations.md

@@ -603,6 +603,6 @@ The [rest-framework-generic-relations][drf-nested-relations] library provides re
 [generic-relations]: https://docs.djangoproject.com/en/stable/ref/contrib/contenttypes/#id1
 [drf-nested-routers]: https://github.com/alanjds/drf-nested-routers
 [drf-nested-relations]: https://github.com/Ian-Foote/rest-framework-generic-relations
-[django-intermediary-manytomany]: https://docs.djangoproject.com/en/2.2/topics/db/models/#intermediary-manytomany
+[django-intermediary-manytomany]: https://docs.djangoproject.com/en/stable/topics/db/models/#intermediary-manytomany
 [dealing-with-nested-objects]: https://www.django-rest-framework.org/api-guide/serializers/#dealing-with-nested-objects
 [to_internal_value]: https://www.django-rest-framework.org/api-guide/serializers/#to_internal_valueself-data

docs/topics/internationalization.md

@@ -103,10 +103,10 @@ You can find more information on how the language preference is determined in th
 For API clients the most appropriate of these will typically be to use the `Accept-Language` header; Sessions and cookies will not be available unless using session authentication, and generally better practice to prefer an `Accept-Language` header for API clients rather than using language URL prefixes.
 
 [cite]: https://youtu.be/Wa0VfS2q94Y
-[django-translation]: https://docs.djangoproject.com/en/1.7/topics/i18n/translation
+[django-translation]: https://docs.djangoproject.com/en/stable/topics/i18n/translation
 [custom-exception-handler]: ../api-guide/exceptions.md#custom-exception-handling
 [transifex-project]: https://www.transifex.com/projects/p/django-rest-framework/
 [django-po-source]: https://raw.githubusercontent.com/encode/django-rest-framework/master/rest_framework/locale/en_US/LC_MESSAGES/django.po
-[django-language-preference]: https://docs.djangoproject.com/en/1.7/topics/i18n/translation/#how-django-discovers-language-preference
-[django-locale-paths]: https://docs.djangoproject.com/en/1.7/ref/settings/#std:setting-LOCALE_PATHS
-[django-locale-name]: https://docs.djangoproject.com/en/1.7/topics/i18n/#term-locale-name
+[django-language-preference]: https://docs.djangoproject.com/en/stable/topics/i18n/translation/#how-django-discovers-language-preference
+[django-locale-paths]: https://docs.djangoproject.com/en/stable/ref/settings/#std:setting-LOCALE_PATHS
+[django-locale-name]: https://docs.djangoproject.com/en/stable/topics/i18n/#term-locale-name