You're absolutely right. Your wording sounds much more polite and also gives a sane reason for it.
--------------------------------------------------------------------------------
Bernhard Rohloff wrote:
> You're absolutely right. Your wording sounds much more polite and also gives a sane reason for it.

Thank you for the feedback. I am not good at English, so please don't hesitate to point out any mistakes in grammar or wording.
--------------------------------------------------------------------------------
I am for this change and I've reworded the 2nd sentence a bit. I think we can say that PRs might not even get reviewed at all without being impolite here.

<pre><code class="diff">@@ -1,8 +1,8 @@
-Please **open an issue on the [official website]** instead of sending pull-requests.
+Please **open an issue on the [official website]** instead of sending pull requests.

-Since the development of Redmine is conducted on not GitHub but the [official web site] and core developers rarely see the repo on GitHub, it may take a longer time for pull-requests on GitHub to be reviewed.
+Since the development of Redmine is not conducted on GitHub but on the [official web site] and core developers are not monitoring the GitHub repo, pull requests might not get reviewed.

-For more detail about how to contribute, please see the wiki page [Contribute] on the [official website].
+For more detail about how to contribute, please see the wiki page [Contribute] on the [official website].

[official website]: https://www.redmine.org
[Contribute]: https://www.redmine.org/projects/redmine/wiki/Contribute</code></pre>

I'm attaching my version. Should we also add @Your contributions to Redmine are welcome!@ to the beginning? :-)
--------------------------------------------------------------------------------
Jan from Planio www.plan.io wrote:
> I am for this change and I've reworded the 2nd sentence a bit.

Thank you for fixing the sentence. It has become much better!

> I'm attaching my version. Should we also add @Your contributions to Redmine are welcome!@ to the beginning? :-)

Do you mean like the following? I like this idea.

<pre>
Your contributions to Redmine are welcome!

Please **open an issue on the [official website]** instead of sending pull requests.
</pre>
--------------------------------------------------------------------------------
I think that would be great, yes.
--------------------------------------------------------------------------------
Nice idea :)

--------------------------------------------------------------------------------
Committed the new CONTRIBUTING.md. Thanks.
--------------------------------------------------------------------------------