Update README.md

Add Requirements section with URL to the supported Python versions.

Update links to main documentation.

(DIS-1986)

Author: martinvanhensbergen

README.md

@@ -3,6 +3,12 @@
 A Dissect module implementing parsers for various executable formats such as PE, ELF and Macho-O. For
 more information, please see [the documentation](https://docs.dissect.tools/en/latest/projects/dissect.executable/index.html).
 
+## Requirements
+
+This project is part of the Dissect framework and requires Python.
+
+Information on the supported Python versions can be found in the Getting Started section of [the documentation](https://docs.dissect.tools/en/latest/index.html#getting-started).
+
 ## Installation
 
 `dissect.executable` is available on [PyPI](https://pypi.org/project/dissect.executable/).
@@ -32,12 +38,12 @@ tox
 ```
 
 For a more elaborate explanation on how to build and test the project, please see [the
-documentation](https://docs.dissect.tools/en/latest/contributing/developing.html#building-testing).
+documentation](https://docs.dissect.tools/en/latest/contributing/tooling.html).
 
 ## Contributing
 
 The Dissect project encourages any contribution to the codebase. To make your contribution fit into the project, please
-refer to [the style guide](https://docs.dissect.tools/en/latest/contributing/style-guide.html).
+refer to [the development guide](https://docs.dissect.tools/en/latest/contributing/developing.html).
 
 ## Copyright and license