UI "Migrating" button should read "Migrate"

[matt-nervos]

Describe the bug (Please enter details, the more detail the better)

typo

Debug info (Please upload the debug info from Help - Export Debug Information)

open Neuron after upgrading

Screenshots (If applicable, add screenshots to help explain your problem.)

[yanguoyu]

#2565

[github-actions]

Mark this issue stale because no activity for 60 days

[github-actions]

Close this issue because it's inactive since marked stale