CI: do not check URLs on github

Running sphinx linkcheck on the github CI now fails for all our references
to the UEFI website ("403 Client Error: Forbidden for url").
As a workaround, run only the local checks on the CI for the moment.

Signed-off-by: Vincent Stehlé <[email protected]>

Author: vstehle

.github/workflows/main.yaml

@@ -84,7 +84,7 @@ jobs:
           pip3 install --user --break-system-packages mako typing Sphinx~=7.4
 
       - name: 'Check'
-        run: make check
+        run: make check-local
 
       - name: 'Build PDF'
         run: |