General style updates to generic OAuth2 page

doc/integration/oauth2_generic.md

@@ -4,31 +4,39 @@ group: Integrations
 info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
 ---
 
-# Sign into GitLab with (almost) any OAuth2 provider **(FREE SELF)**
+# Generic OAuth2 provider **(FREE SELF)**
 
-The `omniauth-oauth2-generic` gem allows Single Sign-On between GitLab and your own OAuth2 provider
-(or any OAuth2 provider compatible with this gem)
+The `omniauth-oauth2-generic` gem allows single sign-on (SSO) between GitLab
+and your OAuth2 provider (or any OAuth2 provider compatible with this gem).
 
-This strategy is designed to allow configuration of the simple OmniAuth SSO process outlined below:
+This strategy allows for the configuration of this OmniAuth SSO process:
 
-1. Strategy directs client to your authorization URL (**configurable**), with specified ID and key
-1. OAuth provider handles authentication of request, user, and (optionally) authorization to access user's profile
-1. OAuth provider directs client back to GitLab where Strategy handles retrieval of access token
-1. Strategy requests user information from a **configurable** "user profile" URL (using the access token)
-1. Strategy parses user information from the response, using a **configurable** format
-1. GitLab finds or creates the returned user and logs them in
+1. Strategy directs the client to your authorization URL (**configurable**), with
+   the specified ID and key.
+1. The OAuth2 provider handles authentication of the request, user, and (optionally)
+   authorization to access user's profile.
+1. The OAuth2 provider directs the client back to GitLab where Strategy handles
+   the retrieval of the access token.
+1. Strategy requests user information from a **configurable** "user profile"
+   URL (using the access token).
+1. Strategy parses user information from the response, using a **configurable**
+   format.
+1. GitLab finds or creates the returned user and signs them in.
 
-## Limitations of this Strategy
+## Limitations of this strategy
 
-- It can only be used for Single Sign on, and doesn't provide any other access granted by any OAuth provider
-  (importing projects or users, etc)
-- It only supports the Authorization Grant flow (most common for client-server applications, like GitLab)
-- It is not able to fetch user information from more than one URL
-- It has not been tested with user information formats other than JSON
+- It can only be used for single sign-on, and doesn't provide any other access
+  granted by any OAuth2 provider (like importing projects or users).
+- It supports only the Authorization Grant flow (most common for client-server
+  applications, like GitLab).
+- It can't fetch user information from more than one URL.
+- It hasn't been tested with user information formats, other than JSON.
 
-## Configuration Instructions
+## Configure the OAuth2 provider
 
-1. Register your application in the OAuth2 provider you wish to authenticate with.
+To configure the provider:
+
+1. Register your application in the OAuth2 provider you want to authenticate with.
 
    The redirect URI you provide when registering the application should be:
 
@@ -36,13 +44,13 @@ This strategy is designed to allow configuration of the simple OmniAuth SSO proc
    http://your-gitlab.host.com/users/auth/oauth2_generic/callback
    ```
 
-1. You should now be able to get a Client ID and Client Secret.
-   Where this shows up differs for each provider.
-   This may also be called Application ID and Secret
+   You should now be able to get a Client ID and Client Secret. Where this
+   appears differs for each provider. This may also be called Application ID
+   and Secret.
 
-1. On your GitLab server, open the configuration file.
+1. On your GitLab server, open the appropriate configuration file.
 
-   For Omnibus package:
+   For Omnibus GitLab:
 
    ```shell
    sudo editor /etc/gitlab/gitlab.rb
@@ -55,9 +63,10 @@ This strategy is designed to allow configuration of the simple OmniAuth SSO proc
    sudo -u git -H editor config/gitlab.yml
    ```
 
-1. See [Configure initial settings](omniauth.md#configure-initial-settings) for initial settings
+1. See [Configure initial settings](omniauth.md#configure-initial-settings) for
+   initial settings.
 
-1. Add the provider-specific configuration for your provider, for example:
+1. Add the provider-specific configuration for your provider. For example:
 
    ```ruby
    gitlab_rails['omniauth_providers'] = [
@@ -92,11 +101,13 @@ This strategy is designed to allow configuration of the simple OmniAuth SSO proc
 
    For more information about these settings, see [the gem's README](https://gitlab.com/satorix/omniauth-oauth2-generic#gitlab-config-example).
 
-1. Save the configuration file
+1. Save the configuration file.
 
-1. Restart GitLab for the changes to take effect
+1. [Restart](../administration/restart_gitlab.md#installations-from-source)
+   GitLab for the changes to take effect.
 
-On the sign in page there should now be a new button below the regular sign in form.
-Click the button to begin your provider's authentication process. This directs
-the browser to your OAuth2 Provider's authentication page. If everything goes well
-the user is returned to your GitLab instance and is signed in.
+On the sign-in page there should now be a new button below the regular sign-in
+form. Select the button to begin your provider's authentication process. This
+directs the browser to your OAuth2 provider's authentication page. If
+everything goes well, you are returned to your GitLab instance and are
+signed in.