fix(ci): single character typo for mkdocs

Author: xarvex

mkdocs.yml

@@ -133,5 +133,5 @@ markdown_extensions:
 plugins:
   - search
   - tags
-  - social # social embed cards
-      enabled: !ENV [CI, false] # enabled only when running in CI (eg GitHub Actions)
+  - social: # social embed cards
+      enabled: !ENV [CI, false] # enabled only when running in CI (eg GitHub Actions)