Fix web commit signing docs to not require web-flow username (#30797)

Co-authored-by: Vanessa <vgrl@github.com>

content/admin/configuration/configuring-your-enterprise/configuring-web-commit-signing.md

@@ -23,6 +23,7 @@ You can enable web commit signing, rotate the private key used for web commit si
 ## Enabling web commit signing
 
 {% data reusables.enterprise_site_admin_settings.create-pgp-key-web-commit-signing %}
+    - Use `web-flow` as the username. If `web-flow` is unavailable or unusable, use any new unique username. Use this username throughout the following steps in this article.
    - If you have a no-reply email address defined in the {% data variables.enterprise.management_console %}, use that email address. If not, use any email address, such as `web-flow@my-company.com`. The email address does not need to be valid.
 {% data reusables.enterprise_site_admin_settings.pgp-key-no-passphrase %}
 {% data reusables.enterprise_site_admin_settings.pgp-key-env-variable %}
@@ -38,11 +39,11 @@ You can enable web commit signing, rotate the private key used for web commit si
    ghe-config-apply
    ```
 1. Create a new user on {% data variables.product.product_location %} via built-in authentication or external authentication. For more information, see "[About authentication for your enterprise](/admin/identity-and-access-management/managing-iam-for-your-enterprise/about-authentication-for-your-enterprise)."
-   - The user's username must be `web-flow`.
-   - The user's email address must be the same address you used for the PGP key. 
+   - The user's username must be the same username you used when creating the PGP key in step 1 above, for example, `web-flow`. 
+   - The user's email address must be the same address you used when creating the PGP key. 
 {% data reusables.enterprise_site_admin_settings.add-key-to-web-flow-user %}
 {% data reusables.enterprise_site_admin_settings.email-settings %}
-1. Under "No-reply email address", type the same email address you used for the PGP key. 
+1. Under "No-reply email address", type the same email address you used when creating the PGP key. 
 
    {% note %}
 
@@ -54,7 +55,8 @@ You can enable web commit signing, rotate the private key used for web commit si
 ## Rotating the private key used for web commit signing
 
 {% data reusables.enterprise_site_admin_settings.create-pgp-key-web-commit-signing %}
-   - Use the no-reply email address defined in the {% data variables.enterprise.management_console %}, which should be the same as the email address of the `web-flow` user.
+   - Use the web commit signing user's username, for example, `web-flow`.
+   - Use the no-reply email address defined in the {% data variables.enterprise.management_console %}, which should be the same as the email address of the web commit signing user, for example, `web-flow`.
 {% data reusables.enterprise_site_admin_settings.pgp-key-no-passphrase %}
 {% data reusables.enterprise_site_admin_settings.pgp-key-env-variable %}
 {% data reusables.enterprise_site_admin_settings.update-commit-signing-service %}

data/reusables/enterprise_site_admin_settings/add-key-to-web-flow-user.md

@@ -4,7 +4,7 @@
    gpg --armor --export KEY-ID
    ```
 1. Copy your PGP key, beginning with `-----BEGIN PGP PUBLIC KEY BLOCK-----` and ending with `-----END PGP PUBLIC KEY BLOCK-----`.
-1. Sign into {% data variables.product.prodname_ghe_server %} as the `web-flow` user.
+1. Sign into {% data variables.product.prodname_ghe_server %} as the user created for web commit signing, for example, `web-flow`.
 1. Add the public PGP key to the user's profile. For more information, see "[Adding a GPG key to your {% data variables.product.prodname_dotcom %} account](/authentication/managing-commit-signature-verification/adding-a-gpg-key-to-your-github-account)."
 
    {% note %}

data/reusables/enterprise_site_admin_settings/create-pgp-key-web-commit-signing.md

@@ -5,4 +5,3 @@
     ```
     
     - Use the default key type and at least `4096` bits with no expiry. 
-    - Use `web-flow` as the username.