Update README.md

[Gabrail]

remove the added config for LOVE_ENDPOINT under front section, also mention to add the LIVEKIT_WS with WSS prefix

[sh4hzaib]

I want to mention couple of things in section "Love Service (Audio & Video calls)"

• on step 2, the image section should be like

  "image: hardcoreeng/love:${HULY_VERSION}"
  this should make sure consistent version.

• secret should be picked from huly.conf
  "SECRET=${SECRET}"

At first glance, I thought secret is something like a secret variable, that might be used for any encryption and generated separately. It took a while to go through other issues and code to observe what really should be here.