Updated proxy info in config profile template (#23548)

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## Description

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Updated company.proxy:443 (:80) to company.proxy:port, as ports can be
any valid port.

## Related issues or tickets

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## Reviews

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- [ ] Technical review
- [x] Editorial review
- [ ] Product review

Author: karman-docker

content/manuals/enterprise/security/enforce-sign-in/methods.md

@@ -119,9 +119,9 @@ Overriding at least one of the proxy settings via Configuration profiles will au
             <key>allowedOrgs</key>
             <string>first_org;second_org</string>
             <key>overrideProxyHTTP</key>
-            <string>http://company.proxy:80</string>
+            <string>http://company.proxy:port</string>
             <key>overrideProxyHTTPS</key>
-            <string>https://company.proxy:443</string>
+            <string>https://company.proxy:port</string>
           </dict>
         </array>
         <key>PayloadType</key>
@@ -145,6 +145,7 @@ Overriding at least one of the proxy settings via Configuration profiles will au
    - Change `com.yourcompany.docker.config` to your company identifier
    - Replace `Your Company Name` with your organization name
    - Update the `allowedOrgs` value with your organization names (separated by semicolons)
+   - Replace `company.proxy:port` with http/https proxy server host(or IP address) and port
 1. Deploy the profile using your MDM solution.
 1. Verify the profile appears in **System Settings** > **General** > **Device Management** under **Device (Managed)** profiles.