[BUG] 'Add data' links are broken

[ahopp]

Describe the bug
If you try to add data and click the available links for 'Learn more' or 'See the Quick Start' you will ingress into a 404'd page in opensearch.org.

To Reproduce
Steps to reproduce the behavior:

1. Go to 'Add data'
2. Click on any listed data source
3. Click 'Learn more' OR 'See the Quick Start'
4. See 404 page

Some examples;
https://www.opensearch.org/guide/en/beats/metricbeat/main/metricbeat-module-azure.html
https://www.opensearch.org/guide/en/beats/filebeat/main/filebeat-module-checkpoint.html
https://www.opensearch.org/guide/en/beats/metricbeat/main/metricbeat-installation-configuration.html
https://www.opensearch.org/guide/en/beats/filebeat/main/filebeat-installation-configuration.html

Expected behavior
We would expect the pages to not 404.

OpenSearch Version
Current v1.0.0 (beta)

Dashboards Version
Current v1.0.0 (beta)

Plugins
Not relevant.

Screenshots
Example Source 1;

Example Source 2;

Example Destination (404);

[kavilla]

Thanks @ahopp, I would consider this a sub-issue of #335.

But will keep this issue open because this helps to have specific issues.

Thanks!

[kavilla]

Will close this as technically a duplicate of this issue #647, right now we remove the ability to get these docs within this application but you can directly go these by typing the route. We need to remove the routes from the router. Will use #335 for final URLs.