Add contributing-guides/alias-pages.md (#5988)

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CONTRIBUTING.md

@@ -103,6 +103,8 @@ Some examples of valid locale tags:
  - Chinese (Singapore): `zh_SG`.
  - Portuguese (Brazil): `pt_BR`.
 
+A list of translated templates for alias pages can be found in [here](contributing-guides/alias-pages.md).
+
 ### Default language for newly added pages
 
 The default language used for pages is English (US). Pages written in English are stored in the default `pages` directory (notice the absence of a specific language tag). Although not strictly required, if you'd like to add a new page in a different language, please consider creating the English page too.