Fixed typo in init README and added screencast of SSH key addition.

git-basics/README.md

@@ -76,7 +76,7 @@ The Web IDE provides all that is required to manipulate a project's files.
 The left panel shows a file explorer with at the top, buttons for:
   - Creating new files.
   - Uploading files.
-  - Creting new folders.
+  - Creating new folders.
 
   ![edit_icons.png](./media/edit_icons.png)
   

git-remote/README.md

@@ -63,6 +63,11 @@ An example of how to generate a key pair and view the public key is given in the
 
 This contents has to be copied to the GitLab SSH Key management page, accessible in the left panel of the User Settings page which can be displayed using `Edit profile` in the menu below the user badge (upper left corner).
 
+The following screencast shows how to ![add an SSH key in GitLab](./media/gitlab-ssh.mp4)
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