fix zsh auto complete function issue, and update the readme file about a fast way to enable zsh completion.#494

maomh wants to merge 2 commits intotldr-pages:maintldr-pages/tldr-node-client:mainfrom

maomh:fix-zsh-completion-can-not-work-wellmaomh/tldr-node-client:fix-zsh-completion-can-not-work-wellCopy head branch name to clipboard