chore(release): release note formatting and gripper model info (#15804)

## Address release notes feedback

> A slight change requested.

- do backticks work in this markdown?

---------

Co-authored-by: Ed Cormany <edward.cormany@opentrons.com>

api/release-notes.md

@@ -10,12 +10,19 @@ log][]. For a list of currently known issues, please see the [Opentrons issue tr
 
 Welcome to the v7.5.0 release of the Opentrons robot software!
 
-This release adds support for the latest Flex Gripper hardware and the [Opentrons Flex HEPA/UV Module](https://opentrons.com/products/opentrons-flex-hepa-uv-module).
+### Hardware Support
+
+- [Opentrons Flex HEPA/UV Module](https://opentrons.com/products/opentrons-flex-hepa-uv-module)
+- Latest Flex Gripper model (serial numbers beginning `GRPV13`)
 
 ### Bug Fixes
 
 - Fixed certain string runtime parameter values being misinterpreted as an incorrect type.
 
+### Known Issue
+
+- The HEPA/UV Module's buttons may not respond properly after its safety shutoff is activated. This happens when the module is removed from the top of Flex while its lights are on. Power cycle the module to restore normal behavior. The module is safe to use even if you do not power cycle it.
+
 ---
 
 ## Opentrons Robot Software Changes in 7.3.1

app-shell/build/release-notes.md

@@ -10,7 +10,7 @@ log][]. For a list of currently known issues, please see the [Opentrons issue tr
 
 Welcome to the v7.5.0 release of the Opentrons App!
 
-There are no changes to the Opentrons App in v7.5.0, but it is required for updating the robot software to support the latest Flex Gripper hardware and the [Opentrons Flex HEPA/UV Module](https://opentrons.com/products/opentrons-flex-hepa-uv-module).
+There are no changes to the Opentrons App in v7.5.0, but it is required for updating the robot software to support the [Opentrons Flex HEPA/UV Module](https://opentrons.com/products/opentrons-flex-hepa-uv-module) and the latest Flex Gripper model (serial numbers beginning `GRPV13`).
 
 ---