Fix typo

Github -> GitHub

Author: changeworld

articles/spring-cloud/how-to-config-server.md

@@ -174,7 +174,7 @@ Now that your configuration files are saved in a repository, you need to connect
 
    > [!CAUTION]
    > Some Git repository servers use a *personal-token* or an *access-token*, such as a password, for **Basic Authentication**. You can use that kind of token as a password in Azure Spring Cloud, because it will never expire. But for other Git repository servers, such as Bitbucket and Azure DevOps Server, the *access-token* expires in one or two hours. This means that the option isn't viable when you use those repository servers with Azure Spring Cloud.
-   > GitHub has removed support for password authentication, so you'll need to use a personal access token instead of password authentication for Github. For more information, see [Token authentication](https://github.blog/2020-12-15-token-authentication-requirements-for-git-operations/).
+   > GitHub has removed support for password authentication, so you'll need to use a personal access token instead of password authentication for GitHub. For more information, see [Token authentication](https://github.blog/2020-12-15-token-authentication-requirements-for-git-operations/).
 
    * **SSH**: In the **Default repository** section, in the **Uri** box, paste the repository URI, and then select the **Authentication** ("pencil" icon) button. In the **Edit Authentication** pane, in the **Authentication type** drop-down list, select **SSH**, and then enter your **Private key**. Optionally, specify your **Host key** and **Host key algorithm**. Be sure to include your public key in your Config Server repository. Select **OK**, and then select **Apply** to finish setting up your Config Server instance.