docs only: remove reference to release notes page and some documentat…

…ion links (prebid#7672)

modules/id5IdSystem.md

@@ -1,14 +1,14 @@
 # ID5 Universal ID
 
-The ID5 Universal ID is a shared, neutral identifier that publishers and ad tech platforms can use to recognise users even in environments where 3rd party cookies are not available. The ID5 Universal ID is designed to respect users' privacy choices and publishers’ preferences throughout the advertising value chain. For more information about the ID5 Universal ID and detailed integration docs, please visit [our documentation](https://support.id5.io/portal/en/kb/articles/prebid-js-user-id-module). We also recommend that you sign up for our [release notes](https://id5.io/universal-id/release-notes) to stay up-to-date with any changes to the implementation of the ID5 Universal ID in Prebid.
+The ID5 ID is a shared, neutral identifier that publishers and ad tech platforms can use to recognise users even in environments where 3rd party cookies are not available. The ID5 ID is designed to respect users' privacy choices and publishers’ preferences throughout the advertising value chain. For more information about the ID5 ID and detailed integration docs, please visit [our documentation](https://support.id5.io/portal/en/kb/articles/prebid-js-user-id-module).
 
-## ID5 Universal ID Registration
+## ID5 ID Registration
 
-The ID5 Universal ID is free to use, but requires a simple registration with ID5. Please visit [id5.io/universal-id](https://id5.io/universal-id) to sign up and request your ID5 Partner Number to get started.
+The ID5 ID is free to use, but requires a simple registration with ID5. Please visit [our website](https://id5.io/solutions/#publishers) to sign up and request your ID5 Partner Number to get started.
 
-The ID5 privacy policy is at [https://www.id5.io/platform-privacy-policy](https://www.id5.io/platform-privacy-policy).
+The ID5 privacy policy is at [https://id5.io/platform-privacy-policy](https://id5.io/platform-privacy-policy).
 
-## ID5 Universal ID Configuration
+## ID5 ID Configuration
 
 First, make sure to add the ID5 submodule to your Prebid.js package with:
 
@@ -46,7 +46,7 @@ pbjs.setConfig({
 | Param under userSync.userIds[] | Scope | Type | Description | Example |
 | --- | --- | --- | --- | --- |
 | name | Required | String | The name of this module: `"id5Id"` | `"id5Id"` |
-| params | Required | Object | Details for the ID5 Universal ID. | |
+| params | Required | Object | Details for the ID5 ID. | |
 | params.partner | Required | Number | This is the ID5 Partner Number obtained from registering with ID5. | `173` |
 | params.pd | Optional | String | Partner-supplied data used for linking ID5 IDs across domains. See [our documentation](https://support.id5.io/portal/en/kb/articles/passing-partner-data-to-id5) for details on generating the string. Omit the parameter or leave as an empty string if no data to supply | `"MT1iNTBjY..."` |
 | params.provider | Optional | String | An identifier provided by ID5 to technology partners who manage Prebid setups on behalf of publishers. Reach out to [ID5](mailto:prebid@id5.io) if you have questions about this parameter  | `pubmatic-identity-hub` |