docs(#2934): add lintdoc.sh to CI

Author: alex-courtis

.github/workflows/ci.yml

@@ -71,10 +71,12 @@ jobs:
           curl -L "https://github.com/LuaLS/lua-language-server/releases/download/${{ matrix.luals_version }}/lua-language-server-${{ matrix.luals_version }}-linux-x64.tar.gz" | tar zx --directory luals
           echo "luals/bin" >> "$GITHUB_PATH"
 
-      - name: get Nvim source
+      - name: build Nvim from source
         run: |
           mkdir -p src
           curl -L "https://github.com/neovim/neovim/archive/refs/tags/${{ matrix.nvim_version }}.tar.gz" | tar zx --directory src
+          cd src/${{ matrix.nvim_version }}
+          make
 
       - run: make check