chore: Resolve lint error MD031

Fixed lint error MD031, blanks-around-fences (Fenced code blocks should be surrounded by blank line)

Author: Infinitay

content/authentication/connecting-to-github-with-ssh/generating-a-new-ssh-key-and-adding-it-to-the-ssh-agent.md

@@ -178,9 +178,11 @@ Before adding a new SSH key to the ssh-agent to manage your keys, you should hav
 > ```
 > 
 > Furthermore, you may need to specify which `ssh-keygen` binary Git should use to avoid conflicts with the binary bundled with Git for Windows. To define which binary is used, run the following command:
+> 
 > ```powershell
 > git config --global gpg.ssh.program "C:/Windows/System32/OpenSSH/ssh-keygen.exe"
 > ```
+> 
 > Alternatively, you can re-install Git for Windows and select the "Use external OpenSSH" option during the installation process.