docs: updated contributing.md

contributing.md

-# Contributing - Development Guide
+# Contributing 
+
+This document summaries the development guide for contributing to the ACMC project.
 
 ## Prerequisites
 To install the ACMC package for development, ensure you have Python 3.9 or later installed.
@@ -133,10 +135,9 @@ Upload to pypi using:
 twine upload dist/acmc-<version>-py3-none-any.whl --username __token__ --password <your pypi token>
 ```
 
+## GitLab Workflows 
 
-## Contributing
-
-### GitLab Basic Workflow Overview 
+### Basic
 
 1. Create an new issue in the [Issue Tracker](https://git.soton.ac.uk/meldb/concepts-processing/-/issues)
 
@@ -170,7 +171,7 @@ You can also create a new branch in your local repo if it does not exist and it
 
 If you make changes, ensure all tests pass and code formatting is correct before submitting a merge request.
 
-## GitLab Workflow for Managing Releases
+## Branches
 
 ### 1. Main Branch (`main`)
 - Represents the stable production-ready code.
@@ -216,7 +217,7 @@ If you make changes, ensure all tests pass and code formatting is correct before
    - Deploy to production after approval.
    - Requires authorization from a repository maintainer or admin before merging.
 
-### Commit Message Guidelines
+## Commit Message Guidelines
 - Use clear and descriptive commit messages.
 - Format: `<type>(<scope>): <description>`
 - Example: `docs: git workflow documentation (#issue)`