docs(readme): update contributions section

Author: paodb

README.md

@@ -61,12 +61,27 @@ The issues for this add-on are tracked on its github.com page. All bug reports a
 
 ## Contributions
 
-Contributions are welcome, but there are no guarantees that they are accepted as such. 
+Contributions are welcome. There are two primary ways you can contribute: by reporting issues or by submitting code changes through pull requests. To ensure a smooth and effective process for everyone, please follow the guidelines below for the type of contribution you are making.
 
-As first step, please refer to our [Development Conventions](https://github.com/FlowingCode/DevelopmentConventions) page to find information about Conventional Commits & Code Style requirements.
+#### 1. Reporting Bugs and Requesting Features
 
-Then, follow these steps for creating a contribution:
+Creating an issue is a highly valuable contribution. If you've found a bug or have an idea for a new feature, this is the place to start.
+
+* Before creating an issue, please check the existing issues to see if your topic is already being discussed.
+* If not, create a new issue, choosing the right option: "Bug Report" or "Feature Request". Try to keep the scope minimal but as detailed as possible.
+
+> **A Note on Bug Reports**
+> 
+> Please complete all the requested fields to the best of your ability. Each piece of information, like the environment versions and a clear description, helps us understand the context of the issue.
+> 
+> While all details are important, the **[minimal, reproducible example](https://stackoverflow.com/help/minimal-reproducible-example)** is the most critical part of your report. It's essential because it removes ambiguity and allows our team to observe the problem firsthand, exactly as you are experiencing it.
+
+#### 2. Contributing Code via Pull Requests
 
+As a first step, please refer to our [Development Conventions](https://github.com/FlowingCode/DevelopmentConventions) page to find information about Conventional Commits & Code Style requirements.
+
+Then, follow these steps for creating a contribution:
+ 
 - Fork this project.
 - Create an issue to this project about the contribution (bug or feature) if there is no such issue about it already. Try to keep the scope minimal.
 - Develop and test the fix or functionality carefully. Only include minimum amount of code needed to fix the issue.
@@ -116,3 +131,4 @@ To do so, just add ```com.flowingcode``` to the ```vaadin.allowed-packages``` pr
 
 More information on Spring scanning configuration [here](https://vaadin.com/docs/latest/integrations/spring/configuration/#configure-the-scanning-of-packages).
 
+