clarify docs

Author: cmintey

docs/docs/documentation/getting-started/authentication/oidc.md

@@ -13,7 +13,7 @@ Signing in with OAuth will automatically find your account in Mealie and link to
 
 ## Provider Setup
 
-Before you can start using OIDC Authentication, you must first configure a new client application in your identity provider. Your identity provider must support the OAuth **Authorization Code** flow (with PKCE). The steps will vary by provider, but generally, the steps are as follows.
+Before you can start using OIDC Authentication, you must first configure a new client application in your identity provider. Your identity provider must support the OAuth **Authorization Code flow with PKCE**. The steps will vary by provider, but generally, the steps are as follows.
 
 1. Create a new client application
     - The Provider type should be OIDC or OAuth2

docs/docs/documentation/getting-started/installation/backend-config.md

@@ -85,8 +85,8 @@ For usage, see [Usage - OpenID Connect](../authentication/oidc.md)
 | OIDC_SIGNUP_ENABLED | True | Enables new users to be created when signing in for the first time with OIDC |
 | OIDC_CONFIGURATION_URL | None | The URL to the OIDC configuration of your provider. This is usually something like https://auth.example.com/.well-known/openid-configuration |
 | OIDC_CLIENT_ID | None | The client id of your configured client in your provider |
-| OIDC_USER_GROUP| None | If specified, this group must be present in the user's group claim in order to authenticate |
-| OIDC_ADMIN_GROUP | None | If this group is present in the group claims, the user will be set as an admin |
+| OIDC_USER_GROUP| None | If specified, only users belonging to this group will be able to successfully authenticate, regardless of the OIDC_ADMIN_GROUP |
+| OIDC_ADMIN_GROUP | None | If specified, users belonging to this group will be made an admin |
 | OIDC_AUTO_REDIRECT | False | If `True`, then the login page will be bypassed an you will be sent directly to your Identity Provider. You can still get to the login page by adding `?direct=1` to the login URL |
 | OIDC_PROVIDER_NAME | OAuth | The provider name is shown in SSO login button. "Login with <OIDC_PROVIDER_NAME\>" |
 | OIDC_REMEMBER_ME | False | Because redirects bypass the login screen, you cant extend your session by clicking the "Remember Me" checkbox. By setting this value to true, a session will be extended as if "Remember Me" was checked |