fix: Update projects moving upward.

Fixes #282

docs/submission-guides/data-model/project.md

@@ -154,6 +154,20 @@ After an invitation is accepted, the creator can still remove any of the members
 <figcaption>Project sharing status with option to remove a collaborator</figcaption>
 </div>
 
+## Project Up
+After projects are published, they can be found in the **Projects** folder in the left pannel.
+
+<div style={{textAlign: 'center'}}>
+<img src="/img/project/projects-folder.png" width="1000"/>
+<figcaption>Projects folder view</figcaption>
+</div>
+
+ **[nmrXiv](https://nmrxiv.org/)** users can use the up arrow, which can be found at the top right corner of each project, to give it an "up", increasing the number next to the arrow by one. If the user finds a project interesting, or if they have used the provided data there, or if they are aware of similar confirming work, they can press the "up" arrow, and based on the number of the users who decided to move a project upward, the project will move up in the view of public projects. 
+
+:::caution 
+Sorting projects by the number of ups is not provided yet, but it is coming soon.
+:::
+
 ## Delete and Archive
 Only private projects can be deleted, while public ones can be archived. The reason is that once a project is public, it can be referenced somewhere else, which requires the repository to keep an active link to this project. Therefore, when the creators of a public project decide that it is no longer maintained, or that the data provided is not accurate, they can only archive it instead of deleting it, while deletion is always an option for private projects.