Merge "Clarify the <sys/ifunc.h> docs." into main am: 6a6f527dfc am: 6c29ab66c8

Original change: https://android-review.googlesource.com/c/platform/bionic/+/2651113

Change-Id: I8780a527e8370f38805fd1502ca02bca52d5f60b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>