change cookie path capitalization for consistency with other env stuff

docker-compose.example.yml

@@ -20,7 +20,9 @@ services:
             - apiURL=https://co.wuk.sh/
             # replace apiName with your instance's distinctive name
             - apiName=eu-nl
-
+            # if you want to use cookies when fetching data from services, uncomment the next line
+            #- cookiePath=/cookies.json
+            # see src/modules/processing/cookie/cookies_example.json for example file.
 
     cobalt-web:
         build: .