Fix repo name

README.md

@@ -34,7 +34,7 @@ Edit your .vimrc
 ```vim
 call plug#begin()
 
-Plug 'junegunn/seoul256'
+Plug 'junegunn/seoul256.vim'
 Plug 'junegunn/vim-easy-align'
 " Plug 'user/repo1', 'branch_or_tag'
 " Plug 'user/repo2', { 'rtp': 'vim/plugin/dir', 'branch': 'devel' }

plug.vim

@@ -11,7 +11,7 @@
 "
 "   call plug#begin()
 "
-"   Plug 'junegunn/seoul256'
+"   Plug 'junegunn/seoul256.vim'
 "   Plug 'junegunn/vim-easy-align'
 "   " Plug 'user/repo1', 'branch_or_tag'
 "   " Plug 'user/repo2', { 'rtp': 'vim/plugin/dir', 'branch': 'devel' }