chore: Update v7.0.0 release notes for PR #13425 (#13443)

* Allow extra time for restart.

* Deemphasize. Also, increase time to 15 minutes just to be safe.

* Remove load time note from API release notes.

* Remove note from app release notes.

* Active voice.

api/release-notes.md

@@ -10,6 +10,8 @@ log][]. For a list of currently known issues, please see the [Opentrons issue tr
 
 Welcome to the v7.0.0 release of the Opentrons robot software! This release adds support for the Opentrons Flex robot, instruments, modules, and labware.
 
+This update may take longer than usual. Allow **approximately 15 minutes** for your robot to restart. This delay will only happen once.
+
 ### New Features
 
 - Flex touchscreen

app-shell/build/release-notes.md

@@ -21,6 +21,10 @@ Welcome to the v7.0.0 release of the Opentrons App! This release adds support fo
   - Manually move labware around the deck during protocols. The app shows animated instructions for which labware to move, and lets you resume the protocol when movement is complete.
   - See when your protocol will pause. During a run, marks on the protocol timeline show all pauses that require user attention, including labware movement.
 
+### Improved Features
+
+- The app loads various pages faster.
+
 ---
 
 ## Opentrons App Changes in 6.3.1