remove quotes from env sample

.env.example

@@ -12,10 +12,10 @@ POSTGRES_USER=unicorn_user
 POSTGRES_PASSWORD=magical_password
 POSTGRES_DB=calendso
 DATABASE_HOST=db:5432
-DATABASE_URL="postgresql://${POSTGRES_USER}:${POSTGRES_PASSWORD}@${DATABASE_HOST}/${POSTGRES_DB}"
-GOOGLE_API_CREDENTIALS='secret'
-BASE_URL='http://localhost:3000'
-NEXTAUTH_URL='http://localhost:3000'
+DATABASE_URL=postgresql://${POSTGRES_USER}:${POSTGRES_PASSWORD}@${DATABASE_HOST}/${POSTGRES_DB}
+GOOGLE_API_CREDENTIALS={}
+BASE_URL=http://localhost:3000
+NEXTAUTH_URL=http://localhost:3000
 
 # Remove this var if you don't want Calendso to collect anonymous usage
 NEXT_PUBLIC_TELEMETRY_KEY=js.2pvs2bbpqq1zxna97wcml.oi2jzirnbj1ev4tc57c5r
@@ -30,16 +30,16 @@ ZOOM_CLIENT_SECRET=
 
 # E-mail settings
 # Configures the global From: header whilst sending emails.
-EMAIL_FROM='notifications@example.com'
+EMAIL_FROM=notifications@example.com
 
 # Configure SMTP settings (@see https://nodemailer.com/smtp/).
-EMAIL_SERVER_HOST='smtp.example.com'
+EMAIL_SERVER_HOST=smtp.example.com
 EMAIL_SERVER_PORT=587
-EMAIL_SERVER_USER='email_user'
-EMAIL_SERVER_PASSWORD='email_password'
+EMAIL_SERVER_USER=email_user
+EMAIL_SERVER_PASSWORD=email_password
 
 # Encryption key that will be used to encrypt CalDAV credentials, choose a random string, for example with `dd if=/dev/urandom bs=1K count=1 | md5sum`
-CALENDSO_ENCRYPTION_KEY=''
+CALENDSO_ENCRYPTION_KEY=
 
 JWT_SECRET=secret
 NODE_ENV=production