Update Text for KB 4530691 to be "Monthly Rollup"

Doc correction by MSRC team.  Was originally published as Non-Security.

Author: v-erswar

articles/cloud-services/cloud-services-guestos-msrc-releases.md

@@ -37,7 +37,7 @@ The following tables show the Microsoft Security Response Center (MSRC) updates
 |  Rel 20-01  |  [4532947]  |  Windows Security  | [6.15] | Jan 14, 2020 |
 |  Rel 20-01  |  [4534273]  |  LCU  | [6.15] | Jan 14, 2020 |
 |  Rel 20-01  |  [4530734]  |  Non-Security  | [2.94] | Dec 10, 2019 |
-|  Rel 20-01  |  [4530691]  |  Non-Security   | [3.81] | Dec 10, 2019 |
+|  Rel 20-01  |  [4530691]  |  Monthly Rollup   | [3.81] | Dec 10, 2019 |
 |  Rel 20-01  |  [4530702]  |  Non-Security  | [4.74] | Dec 10, 2019 |
 
 [4532960]: https://support.microsoft.com/kb/4532960