README: fix typo again

Author: haorenW1025

README.md

@@ -226,8 +226,7 @@ let g:completion_timer_cycle = 200 "default value is 80
 
 - This plugin only focuses on the **completion** part of the built-in LSP. If
   you want similar help with diagnostics (e.g. virtual text, jump to diagnostic,
-  open line diagnostic automatically...), take a loot at ![diagnostic-nvim]
-  (https://github.com/haorenW1025/diagnostic-nvim).
+  open line diagnostic automatically...), take a loot at ![diagnostic-nvim](https://github.com/haorenW1025/diagnostic-nvim).
 
 - Both diagnostic-nvim and completion-nvim require setting up via `on_attach`.
   To use them together, create a wrapper function like this.