Fix warning of vuepress plugins have been used multiple times - #2075

Fix warning of vuepress plugins have been used multiple times#2075

hustcer merged 3 commits into

nushell:mainnushell/nushell.github.io:mainfrom

hustcer:fix/remove-dupe-pluginshustcer/nushell.github.io:fix/remove-dupe-pluginsCopy head branch name to clipboard