docs: fixed instances of typo in 'overridden'

This affects several files beyond those mentioned in the bug.

I didn't fix some instances because the files had code
problems that blocked presubmit checks.

Test: make ds-docs

Bug: 37094741

Change-Id: I642f0384fef2b267ebc970bae1b4fb90bae667e7
Exempt-From-Owner-Approval: Docs-only change
diff --git a/core/java/android/app/Notification.java b/core/java/android/app/Notification.java
index c22a43e..1fc6b0b 100644
--- a/core/java/android/app/Notification.java
+++ b/core/java/android/app/Notification.java
@@ -3482,7 +3482,7 @@
 
         /**
          * Set the small icon, which will be used to represent the notification in the
-         * status bar and content view (unless overriden there by a
+         * status bar and content view (unless overridden there by a
          * {@link #setLargeIcon(Bitmap) large icon}).
          *
          * @param icon An Icon object to use.