removes notification language, adjusts version language

Author: Alex Kemper

docs/admin/postgres12_end_of_life_notice.mdx

@@ -1,6 +1,6 @@
 # Postgres 12 End of Life
 
-Sourcegraph's required minimum version of Postgres will be updated to Postgres 16 with upcoming releases, Sourcegraph 5.10. This change in required minimum version is a result of Postgres 12, the previous required minimum version, reaching end of life. This notification is coming to you because you are running a self-hosted instance of Sourcegraph. Please review the below information and reach out if you have any questions or would like to review the impact this change will have on you!
+Sourcegraph's required minimum version of Postgres will be updated to Postgres 16 with upcoming releases, Sourcegraph 5.10. This change in required minimum version is a result of Postgres 12, the previous required minimum version, reaching end of life. Please review the below information and reach out if you have any questions or would like to review the impact this change will have on you!
 
 ## What
 Currently, Sourcegraph's minimum required version of Postgres, the database management system used for all Sourcegraph instances, is Postgres 12. Postgres 12 is reaching end-of-life and will no longer be supported by Postgres. Because of this, Sourcegraph will be updating our minimum supported version to Postgres 16.
@@ -17,7 +17,7 @@ If you are using Sourcegraph's released Postgres images, these images will be up
 We strongly recommend that you consider this downtime prior to upgrading to ensure minimal disruption to your users. We also strongly recommend creating a backup of your database before the upgrade process.
 
 ### External Databases
-If you are using externally managed databases for your Sourcegraph instance, you will need to manually upgrade the version of Postgres you are using to Postgres 16. For Sourcegraph version 5.12 (expected for release on January 15, 2025) and subsequent versions, Sourcegraph will no longer run on any version of Postgres lower than Postgres 16, and you will not be able to upgrade your instance to any of those Sourcegraph versions unless that minimum required version of Postgres is met.
+If you are using externally managed databases for your Sourcegraph instance, you will need to manually upgrade the version of Postgres you are using to Postgres 16. For the Sourcegraph version that will be released on January 15, 2025 and subsequent versions, Sourcegraph will no longer run on any version of Postgres lower than Postgres 16, and you will not be able to upgrade your instance to any of those Sourcegraph versions unless that minimum required version of Postgres is met.
 
 The steps for upgrading your version of  Postgres will be dependent on your organizational practices and the database management service you are using.