Docs: Make wording familiar to Salesforce admins

Use "Salesforce" (lowercase 'f')

Use Salesforce help doc language to navigate setup menu

Clarify to use callback url matching the GitLab installation url

doc/integration/salesforce.md

-# SalesForce OmniAuth Provider
+# Salesforce OmniAuth Provider
 
-You can integrate your GitLab instance with [SalesForce](https://www.salesforce.com/) to enable users to login to your GitLab instance with their SalesForce account.
+You can integrate your GitLab instance with [Salesforce](https://www.salesforce.com/) to enable users to log in to your GitLab instance with their Salesforce account.
 
-## Create SalesForce Application
+## Create a Salesforce Connected App
 
-To enable SalesForce OmniAuth provider, you must use SalesForce's credentials for your GitLab instance.
-To get the credentials (a pair of Client ID and Client Secret), you must register an application on SalesForces.
+To enable Salesforce OmniAuth provider, you must use Salesforce's credentials for your GitLab instance.
+To get the credentials (a pair of Client ID and Client Secret), you must [create a Connected App](https://help.salesforce.com/articleView?id=connected_app_create.htm&type=5) on Salesforce.
 
-1.  Sign in to [SalesForce](https://www.salesforce.com/).
+1.  Sign in to [Salesforce](https://login.salesforce.com/).
 
-1.  Navigate to **Platform Tools/Apps/App Manager** and click on **New Connected App**.
+1.  In Setup, enter `App Manager` in the Quick Find box, click **App Manager**, then click **New Connected App**.
 
 1.  Fill in the application details into the following fields:
     - **Connected App Name** and **API Name**: Set to any value but consider something like `<Organization>'s GitLab`, `<Your Name>'s GitLab`, or something else that is descriptive.
+    - **Contact Email**: Enter the contact email for Salesforce to use when contacting you or your support team.
     - **Description**: Description for the application.
 
-    ![SalesForce App Details](img/salesforce_app_details.png)
+    ![Salesforce App Details](img/salesforce_app_details.png)
 1.  Select **API (Enable OAuth Settings)** and click on **Enable OAuth Settings**.
 1.  Fill in the application details into the following fields:
-    - **Callback URL**: The call callback URL. For example, `https://gitlab.example.com/users/auth/salesforce/callback`.
+    - **Callback URL**: The callback URL of your GitLab installation. For example, `https://gitlab.example.com/users/auth/salesforce/callback`.
     - **Selected OAuth Scopes**: Move **Access your basic information (id, profile, email, address, phone)** and **Allow access to your unique identifier (openid)** to the right column.
 
-    ![SalesForce Oauth App Details](img/salesforce_oauth_app_details.png)
+    ![Salesforce Oauth App Details](img/salesforce_oauth_app_details.png)
 1. Click **Save**.
 
 1.  On your GitLab server, open the configuration file.
@@ -63,17 +64,16 @@ To get the credentials (a pair of Client ID and Client Secret), you must registe
           app_secret: 'SALESFORCE_CLIENT_SECRET'
         }
     ```
-1.  Change `SALESFORCE_CLIENT_ID` to the Consumer Key from the SalesForce connected application page.
-1.  Change `SALESFORCE_CLIENT_SECRET` to the Consumer Secret from the SalesForce connected application page.
-    ![SalesForce App Secret Details](img/salesforce_app_secret_details.png)
+1.  Change `SALESFORCE_CLIENT_ID` to the Consumer Key from the Salesforce connected application page.
+1.  Change `SALESFORCE_CLIENT_SECRET` to the Consumer Secret from the Salesforce connected application page.
+    ![Salesforce App Secret Details](img/salesforce_app_secret_details.png)
 
 1.  Save the configuration file.
-1.  [Reconfigure GitLab]( ../administration/restart_gitlab.md#omnibus-gitlab-reconfigure ) or [restart GitLab]( ../administration/restart_gitlab.md#installations-from-source ) for the changes to take effect if you
-    installed GitLab via Omnibus or from source respectively.
+1.  [Reconfigure GitLab]( ../administration/restart_gitlab.md#omnibus-gitlab-reconfigure ) or [restart GitLab]( ../administration/restart_gitlab.md#installations-from-source ) for the changes to take effect if you installed GitLab via Omnibus or from source respectively.
 
-On the sign in page, there should now be a SalesForce icon below the regular sign in form.
-Click the icon to begin the authentication process. SalesForce will ask the user to sign in and authorize the GitLab application.
+On the sign in page, there should now be a Salesforce icon below the regular sign in form.
+Click the icon to begin the authentication process. Salesforce will ask the user to sign in and authorize the GitLab application.
 If everything goes well, the user will be returned to GitLab and will be signed in.
 
 NOTE: **Note:**
-GitLab requires the email address of each new user. Once the user is logged in using SalesForce, GitLab will redirect the user to the profile page where they will have to provide the email and verify the email.
+GitLab requires the email address of each new user. Once the user is logged in using Salesforce, GitLab will redirect the user to the profile page where they will have to provide the email and verify the email.
\ No newline at end of file