use exercism.org links

CONTRIBUTING.md

@@ -2,13 +2,13 @@
 
 Please see the central Exercism contributing documents:
 
-* [Being a Good Exercism Community Member](https://github.com/exercism/docs/tree/main/community/good-member#being-a-good-exercism-community-member)
-* [Community](https://github.com/exercism/docs/tree/main/community)
-* [Contributing to Exercism](https://github.com/exercism/docs/tree/main/building)
-* [Building / Tracks](https://github.com/exercism/docs/tree/main/building/tracks)
+* [Being a Good Community Member](https://exercism.org/docs/community/being-a-good-community-member)
+* [Community](https://exercism.org/docs/community)
+* [Contributing to Exercism](https://exercism.org/docs/building)
+* [Building / Tracks](https://exercism.org/docs/building/tracks)
 
 There are a lot of great resources for contributing to Exercism in general
 already.  Check out the [docs] repository for a larger overview and some more
 general purpose instructions.
 
-[docs]: (https://github.com/exercism/docs)
+[docs]: (https://exercism.org/docs)

POLICIES.md

@@ -36,7 +36,7 @@ References: [[1](https://github.com/exercism/bash/issues/88)]
 
 ### Exercise structure
 
-Please see the [Practice Exercises](https://github.com/exercism/docs/blob/main/building/tracks/practice-exercises.md)
+Please see the [Practice Exercises](https://exercism.org/docs/building/tracks/practice-exercises)
 document, which thoroughly discusses the structure of an exercise.
 
 ### Exercise Test Structure

docs/MAINTAINING.md

@@ -23,7 +23,7 @@ As a maintainer, you have write access to several repositories.  "write access"
 
 ## Maintainer Guides
 
-- **[Maintainers](https://github.com/exercism/docs/blob/main/community/maintainers.md)**
+- **[Maintainers](https://exercism.org/docs/community/maintainers)**
 
 ## Miscellaneous