adding a 'contribution and feedback' section to the tools page based on #250.

templates/tools/tools.html

@@ -15,6 +15,8 @@ <h1><span class="text-vhppink" id="collection-name">Tools</span></h1>
         <p class="text-secondary fs-5"> Explore tools developed by and/or used in VHP4Safety. </p>
         <p>You can search for a tool that you know using the search box below. Alternatively, you can filter the tools with respect to the <a class="link-vhppink text-decoration-none" href="{{ url_for('workflows') }}#about-section">case studies' flow step</a> that they belong to and/or the regulatory question that they are associated with. Use the "Filters" button to show filter options, then "Apply Filter" to see results, and click "Clear Filter" to reset the filters.</p>
 
+        <p class="text-secondary fs-5"> Contribution and Feedback </p>
+        <p>We welcome and appreciate any feedback on this catalog of tools or the individual tools listed in it. We also appreciate receiving requests for other tools that you are aware of and deem relevant to this catalog. For these contribution and feedback, please feel free to create <a class="link-vhppink text-decoration-none" href="https://github.com/VHP4Safety/virtual-human-platform/issues">an issue at our repository</a>.
     </div>
 
     <nav class="navbar navbar-expand-lg bg-body-tertiary mb-3 d-inline">