[2.x] indent new apmpgx docs (#1371)

[bmorelli25]

Backport

This will backport the following commits from main to 2.x:

• indent new apmpgx docs (#1371)

Questions ?

Please refer to the Backport tool documentation

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• Start Time: 2023-01-18T21:50:40.824+0000

• Duration: 3 min 0 sec

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To re-run your PR in the CI, just comment with:

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