DOC-239 | Remove compile instructions from 3.12+ (#513)

* Remove compile instructions

Refer to Contributing guidelines (CONTRIBUTING.md) in the main repo for compiling yourself. Add Netlify redirects as well.

* Netlify redirects for /stable/... too

* Apply 3.12 changes to 3.13

Author: Simran-B

site/content/3.12/about-arangodb/features/community-edition.md

@@ -53,7 +53,7 @@ see [arangodb.com/community-server/](https://www.arangodb.com/community-server/)
 
 - [**Multiple Environments**](../../operations/installation/_index.md#supported-platforms-and-architectures):
   Run ArangoDB on Linux using the production-ready packages for the x86-64
-  architecture, bare metal or in containers.
+  architecture, on bare metal or in containers.
   Develop and test with ArangoDB on Windows, macOS, and Linux using the official
   ArangoDB Docker images, available for the x86-64 architecture and 64-bit ARM chips.
 

site/content/3.12/operations/installation/_index.md

@@ -19,8 +19,8 @@ to run ArangoDB in containers on Linux, macOS, and Windows. For more information
 see the [Docker](docker.md) section.
 {{< /tip >}}
 
-If you prefer to compile ArangoDB from source, please refer to the [Compiling](compiling/_index.md)
-section.
+If you prefer to compile ArangoDB from source, please refer to the
+[Contributing guidelines](https://github.com/arangodb/arangodb/blob/devel/CONTRIBUTING.md).
 
 For detailed information on how to deploy ArangoDB, once it has been installed,
 please refer to the [Deploy](../../deploy/_index.md) chapter.