fix: env.example requesting 24 bytes instead of 32 bytes encryption key (#12043)

.env.example

@@ -87,7 +87,7 @@ CRON_ENABLE_APP_SYNC=false
 
 # Application Key for symmetric encryption and decryption
 # must be 32 bytes for AES256 encryption algorithm
-# You can use: `openssl rand -base64 24` to generate one
+# You can use: `openssl rand -base64 32` to generate one
 CALENDSO_ENCRYPTION_KEY=
 
 # Intercom Config