Update .env example according to app evolutions

example.env

@@ -17,9 +17,12 @@ GITHUB_PERSONAL_ACCESS_TOKEN=null
 # MATOMO_SUBDOMAINS="*.DOMAIN"
 
 # OAuth2 configuration
+# OAUTH2_ACCESS_TOKEN_URL="https://IDENTITY_PROVIDER/REALM/token"
+# OAUTH2_AUTHORIZATION_URL="https://IDENTITY_PROVIDER/REALM/auth"
+# OAUTH2_PROFILE_URL="https://IDENTITY_PROVIDER/REALM/userinfo"
 # OAUTH2_CLIENT_ID="OAUTH2_CLIENT_ID"
 # OAUTH2_CLIENT_SECRET="OAUTH2_CLIENT_SECRET"
-# OAUTH2_ISSUER_URL="https://IDENTITY_PROVIDER/REALM"
+# OAUTH2_JWT_SECRET="OAUTH2_JWT_SECRET"
 
 # Description of OpenFisca country repository (for edition / contribution)
 OPENFISCA_BRANCH="harmonisation_ui_emmanuel"
@@ -50,6 +53,11 @@ API_BUDGET_URL="https://api-simu-etat-integ.leximpact.dev/"
 # For fake data: API_BUDGET_ENDPOINT_NAME="state_simulation_random"
 API_BUDGET_ENDPOINT_NAME="state_simulation"
 
+# Calculation - Base law year
 CALCULATION_BASE_YEAR=2022
-# CALCULATION_PLF_YEAR = CALCULATION_BASE_YEAR + 1 when PLF is activated
-CALCULATION_PLF_YEAR=2022
+
+# Calculation - PLF reformed law year
+# setting a value (different from zero or empty string) activates the PLF
+# No PLF:
+CALCULATION_PLF_YEAR=0
+# With PLF 2023: CALCULATION_PLF_YEAR=2023