title: Clangd is not found in VIM using neoclide / coc.nvim
body: <ol>
  <li>I typed in Vim :CocInstall coc-clangd</li>
  <li>Complains about clangd is not installed</li>
  <li>sudo apt-get install clangd-10, also i installed clangd-9</li>
  <li>still same error appears</li>
  <li>reboot</li>
  <li>still same error</li>
  </ol>
  <p><a href="https://i.stack.imgur.com/TUZhf.png" rel="nofollow noreferrer">clangd is not found, you need to install clangd first</a></p>
  <p>Is there something that I miss and you want to know guys?</p>