Change base tag to "/" for index.html (#15965)
Change base tag to "/" for index.html (#15965)

Signed-off-by: AllForNothing <6460d228889c4093848bc564d29ad25338e6eaa6@vmware.com>
wy65701436/harbor,wy65701436/harbor,wy65701436/harbor,wy65701436/harbor,wy65701436/harbor,wy65701436/harbor