docs(rebase): write a rebase doc

docs/src/content/docs/guides/create-challenge.md

@@ -25,7 +25,7 @@ To streamline the process, I have created an Nx generator that will set up all t
 - <b>challengeDifficulty</b>: The difficulty you think your challenge has. There are three difficulty levels : 🟢 easy / 🟠 medium / 🔴 hard
 - <b>name</b>: name of the Nx application.
   :::note
-  It must be written in **Kebab-Case**
+  It must be written in **kebab-case**
   :::
 - <b>docRepository</b>: The category of your Challenge: Nx, Angular, Angular Performance, Rxjs, NgRx, Typescript.
 
@@ -48,3 +48,7 @@ Don't forget to update the docs to introduce your challenge and provide your ins
 :::
 
 It's your turn to act!!! 💪
+
+## Solution Submittion
+
+After one week or so, don't forget to provide your solution to your challenge.

docs/src/content/docs/guides/rebase.md

@@ -0,0 +1,55 @@
+---
+title: Rebase your branch
+description: Guide to rebase a branch to latest change
+sidebar:
+  order: 6
+---
+
+Sometimes, changes may be added to the project. I'll attempt to make changes that won't break anything, but sometimes it's inevitable.
+
+Most of the time, you won't need to rebase your solution, but here is a guide to help you know how to do it.
+
+:::note
+This guide is applicable to any Open Source Project.
+:::
+
+## Steps to rebase your branch
+
+### Sync your repository
+
+First, you need to synchronize your fork to ensure it's up to date with the forked repository.
+
+You can achieve this by clicking the Sync fork button on the main page of your fork.
+
+![Sync project header](../../../assets/fork-sync.png)
+
+The image above shows that my branch is behind of the main branch by 8 commits, and I need to synchronize it to be up to date.
+
+![Sync project update modal](../../../assets/sync-fork-update.png)
+
+### Open a terminal
+
+Open any terminal of your choice, either the one from your favorite IDE or a standalone instance.
+
+### Git
+
+Follow the following commands to rebase your local branch:
+
+- git checkout main
+- git pull
+- git checkout [your branch]
+- git rebase main
+- Resolve Conflicts
+
+At this step, the rebase may stop because your local branch has conflicting files with the main branch. Correct them. After this is done:
+
+- git add .
+- git rebase --continue
+
+If your branch doesn't have any conflicts, a success message will be shown.
+
+### Push your work back to the remote branch
+
+Finally, push your work back to GitHub:
+
+- git push -f