Modify docs to reflect operational changes in overrideConfig

Bug: 130372397
Test: Manual
Merged-In: Iff2a6e2cf867ab2e8677ac67f31d87e0365ec9fa
Change-Id: Iff2a6e2cf867ab2e8677ac67f31d87e0365ec9fa
(cherry picked from commit ddad44d41a32c7fbad33745c4542ce2931d627f4)
1 file changed