Update .env.example

Minor comment add suggestions..

.env.example

@@ -56,25 +56,27 @@ MINT_DERIVATION_PATH="m/0'/0'/0'"
 MINT_DATABASE=data/mint
 
 # Lightning
-# Supported: FakeWallet, LndRestWallet, CoreLightningRestWallet, LNbitsWallet, BlinkWallet, StrikeWallet
+# Supported: FakeWallet, LNbitsWallet, LndRestWallet, CoreLightningRestWallet,BlinkWallet, StrikeWallet
 MINT_LIGHTNING_BACKEND=FakeWallet
 
 # for use with LNbitsWallet
 MINT_LNBITS_ENDPOINT=https://legend.lnbits.com
 MINT_LNBITS_KEY=yourkeyasdasdasd
 
-# LndRestWallet
+# for use with LndRestWallet
 MINT_LND_REST_ENDPOINT=https://127.0.0.1:8086
 MINT_LND_REST_CERT="/home/lnd/.lnd/tls.cert"
 MINT_LND_REST_MACAROON="/home/lnd/.lnd/data/chain/bitcoin/regtest/admin.macaroon"
 
-# CoreLightningRestWallet
+# for use with CoreLightningRestWallet
 MINT_CORELIGHTNING_REST_URL=https://localhost:3001
 MINT_CORELIGHTNING_REST_MACAROON="./clightning-rest/access.macaroon"
 MINT_CORELIGHTNING_REST_CERT="./clightning-2-rest/certificate.pem"
 
+# for use with BlinkWallet
 MINT_BLINK_KEY=blink_abcdefgh
 
+# for use with StrikeWallet
 MINT_STRIKE_KEY=ABC123
 
 # fee to reserve in percent of the amount