docs(plugins): updates the description for app-reg

[raoxiaoyan]

Description

Testing instructions

Preview link:

Checklist

• Review label added
• Conditional version tags added, if applicable.

For example, if this change is for an upcoming 3.6 release, enclose your content in {% if_version gte:3.6.x %} <content> {% endif_version %} tags (or if_plugin_version tags for plugins).

Use any of the following keys:

• gte:<version> - greater than or equal to a specific version
• lte:<version> - less than or equal to a specific version
• eq:<version> - exactly equal to a specific version

You can do the same for older versions.

FTI-5789
KM-47

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[raoxiaoyan]

Please wait for this PR to be merged. https://github.com/Kong/kong-ee/pull/8556

[lena-larionova]

Why is there development on the app registration plugin in 3.7, if we are no longer supporting the Dev Portal?

Got my answer in Slack. Adding this change is fine, we'll just need to make some adjustments to the plugin doc itself (outside the scope of this PR).

[raoxiaoyan]

Why is there development on the app registration plugin in 3.7, if we are no longer supporting the Dev Portal?

Got my answer in Slack. Adding this change is fine, we'll just need to make some adjustments to the plugin doc itself (outside the scope of this PR).

Thanks. This PR will be backported to 3.4.x, 3.5.x, and 3.6.x.

[sumimakito]

Hello @lena-larionova - I've left some suggestions in the comments to describe these changes. Would you mind giving this PR another look? Thanks!

[lena-larionova]

This LGTM now, but holding off to merge until it gets into a 3.4 patch. Our doc currently lists 3.4 as the last available version for the plugin.

[lena-larionova]

Merge after https://github.com/Kong/kong-ee/pull/8746 gets merged + next 3.4 patch after that.

[raoxiaoyan]

Merge after Kong/kong-ee#8746 gets merged + next 3.4 patch after that.

@lena-larionova It is ready for merge.

[lena-larionova]

Yep, I've marked this PR for release with the 3.4.3.7 patch. I'll merge when it goes out.