Wallet splash page tutorial "Block Creation" still has placeholder text

[exitus1]

[xaur]

I think it was missed in #3881. Should be a one line fix:

https://github.com/decred/decrediton/blob/release-v1.8.1/app/components/views/GetStartedPage/WalletSelection/Form/Form.jsx#L305

Also it may be worth to deduplicate some of these lists of tutorials:

• https://github.com/decred/decrediton/blob/release-v1.8.1/app/components/views/SettingsPage/TutorialsTab/TutorialsTab.jsx#L44
• https://github.com/decred/decrediton/blob/release-v1.8.1/app/components/views/GetStartedPage/LoadingPage/LoadingPage.jsx#L22
• https://github.com/decred/decrediton/blob/release-v1.8.1/app/components/views/GetStartedPage/WalletSelection/Form/Form.jsx#L305