enhance: og:image (#616)

* enhance: test deployment with seo image

* enhance: another one

Author: LaurenceJJones

crowdsec-docs/docusaurus.config.js

@@ -68,6 +68,7 @@ module.exports = {
         },
     ],
     themeConfig: {
+        image: "img/crowdsec_og_image.png",
         announcementBar: {
             id: "banner_docs",
             content: