Update doc/sphinx/developer_manual/start_devel_and_contrib/contributi…

…ng_to_GWB/index.md

Co-authored-by: Timo Heister <[email protected]>

doc/sphinx/developer_manual/start_devel_and_contrib/contributing_to_GWB/index.md

@@ -2,7 +2,7 @@
 Contributing to the GWB
 ======================
 
-Starting to contribute may feel like a big hurdle, but it should not. There are many ways to start contributing. This can for example take the form of helping other users, helping with writing, reviewing documentation, testing code and reporting bugs and/or writing code. All these kind of contributions are greatly appreciated. This section will outline process for the different ways you can contribute to the World Builder.
+Starting to contribute may feel like a big hurdle, but it should not. There are many ways to start contributing. This can for example take the form of helping other users, helping with writing or reviewing documentation, testing code and reporting bugs, or writing code. All these kind of contributions are greatly appreciated. This section will outline process for the different ways you can contribute to the World Builder.
 
 ```{toctree}
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