🧑‍💻 Force colored output for docs build

Helps a lot for failing link checks to scan which link broke.

Author: sergei-maertens

.github/workflows/ci.yml

@@ -115,6 +115,8 @@ jobs:
           make SPHINXOPTS="-W" html
           make linkcheck
         working-directory: docs
+        env:
+          FORCE_COLOR: "1"
 
   docker-build:
     runs-on: ubuntu-latest