Update agents-overview.md

adding reel 8 support for LAD

Author: Lukeout

articles/azure-monitor/agents/agents-overview.md

@@ -213,8 +213,8 @@ View [supported operating systems for Azure Arc Connected Machine agent](../../a
 | Oracle Linux 6                                              |   | X |   |
 | Oracle Linux 6.4+                                           |   | X | X |
 | Red Hat Enterprise Linux Server 9+                         | X |  |   |
-| Red Hat Enterprise Linux Server 8.6                         | X<sup>3</sup> | X |   |
-| Red Hat Enterprise Linux Server 8+                           | X | X |   |
+| Red Hat Enterprise Linux Server 8.6                         | X<sup>3</sup> | X<sup>2</sup> | X<sup>2</sup> |
+| Red Hat Enterprise Linux Server 8+                           | X | X<sup>2</sup> | X<sup>2</sup> |
 | Red Hat Enterprise Linux Server 7                           | X | X | X |
 | Red Hat Enterprise Linux Server 6.7+                        |   | X | X |
 | Red Hat Enterprise Linux Server 6                           |   | X |   |