refactor: move the command needed to a 'note' ('info') admonition box

content/security/gpg-key.md

@@ -80,13 +80,24 @@ You will need to tell Git about your key and have it sign new commits for you.
 2. Type `git config --global user.signingkey <GPG KEY ID>`
 3. Type `git config --global commit.gpgsign true`
 
-Finally, to add your GPG key to your .bashrc startup file, run the following command:
+{% admonition "note" %}
+
+Just in case you have a similar error to the one below when signing a commit.
+
+```shell
+error: gpg failed to sign the data
+fatal: failed to write commit object
+```
+
+Then you need to execute the following command in order to add the `GPG_TTY` variable to your `~/bashrc` file.
 
 ```shell
 [ -f ~/.bashrc ] && echo -e '\nexport GPG_TTY=$(tty)' >> ~/.bashrc
 ```
 
-After that, reboot your system and you will be able to sign your commits.
+After that, log out your session (there's no need to reboot) and you will be able to sign your commits.
+
+{% endadmonition %}
 
 ---
 > **Attribution**