Adding note in comments for working arm64 chrome with rPi-4 (#336)

docker-compose.yml

@@ -43,7 +43,8 @@ services:
       restart: unless-stopped
 
      # Used for fetching pages via WebDriver+Chrome where you need Javascript support.
-     # Does not work on rPi, https://github.com/dgtlmoon/changedetection.io/wiki/Fetching-pages-with-WebDriver
+     # Now working on arm64 (needs testing on rPi - tested on Oracle ARM instance)
+     # replace image with seleniarm/standalone-chromium:4.0.0-20211213
 
 #    browser-chrome:
 #        hostname: browser-chrome