Added default subjects to the mailto URLs.

Signed-off-by: Dean Wampler <[email protected]>

Author: deanwampler

docs/about.markdown

@@ -15,7 +15,7 @@ This web site is built with [GitHub Pages](https://pages.github.com/){:target="g
 We welcome contributions! For more information, see [Contributing]({{site.baseurl}}/contributing/).
 
 * [More About the AI Alliance](https://thealliance.ai/about-aia){:target="ai-alliance"}
-* [Contact Us](mailto:[email protected]) (email)
+* [Contact Us](mailto:[email protected]?subject=Questions about the AI Alliance) (email)
 * Follow us on [LinkedIn](https://www.linkedin.com/company/the-aialliance/){:target="linkedin"}
 
 ## About Jekyll

docs/contributing.markdown

@@ -11,7 +11,14 @@ We welcome your contributions to this user guide. You are welcome to join the AI
 
 If you want to join our work group, complete the form on [this page](https://thealliance.ai/working-groups/trust-safety#trust-and-safety-form){:target="join-us"}. Thank you for your interest!
 
-Because the sources for this guide are in [this GitHub repo](https://github.com/The-AI-Alliance/trust-safety-user-guide){:target="tsug-repo"}, you can also [post issues](https://github.com/The-AI-Alliance/trust-safety-user-guide/issues){:target="tsug-repo"} or contribute changes as [pull requests](https://github.com/The-AI-Alliance/trust-safety-user-guide/pulls){:target="tsug-repo"}. 
+Suggestions for improvements or topics _you wish were covered_ are welcome!
+
+Ways to suggest ideas and provide feedback:
+* Start a [discussion topic](https://github.com/The-AI-Alliance/trust-safety-user-guide/discussions){:target="discussions"} topic.
+* Post an [issue](https://github.com/The-AI-Alliance/trust-safety-user-guide/issues){:target="issues"}.
+* Send us [email](mailto:[email protected]?subject=Suggestions for the Trust and Safety User Guide). This is a general email address, so be sure to mention this particular project. (The email “subject” should be filled in already with this information...)
+
+You can contribute changes directly as [pull requests](https://github.com/The-AI-Alliance/trust-safety-user-guide/pulls){:target="tsug-repo"}. 
 
 Notice that every page has [{{ site.gh_edit_link_text }}]({{ site.gh_edit_repository }}/{{ page.path }}){:id="edit-this-page" target="doc_repo_page"} links, making it easy to view a page, then go straight to the source to make edits and submit a PR! This is the best way to help us fix typos and make similar small edits. The [repo's README](https://github.com/The-AI-Alliance/trust-safety-user-guide){:target="tsug-repo"} also describes our "DCO" requirements, which you should understand before submitting PRs, and it explains more details about testing the website locally, etc.