Fix: add missing newline at end of file in nvm.zsh and pyenv.zsh for consistency

zshrc/nvm.zsh

@@ -4,4 +4,4 @@ nvm() {
     [ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh"
     [ -s "$NVM_DIR/bash_completion" ] && \. "$NVM_DIR/bash_completion"
     nvm "$@"
-}
+}