treewide: use consistent echo message formatting

Quote the echo message.

modules/lnd.nix

@@ -214,24 +214,24 @@ in {
             if [[ ! -f ${networkDir}/wallet.db ]]; then
               mnemonic="${cfg.dataDir}/lnd-seed-mnemonic"
               if [[ ! -f "$mnemonic" ]]; then
-                echo Create lnd seed
+                echo "Create lnd seed"
                 umask u=r,go=
                 ${curl} -X GET ${restUrl}/genseed | ${pkgs.jq}/bin/jq -c '.cipher_seed_mnemonic' > "$mnemonic"
               fi
 
-              echo Create lnd wallet
+              echo "Create lnd wallet"
               ${curl} --output /dev/null \
                 -X POST -d "{\"wallet_password\": \"$(cat ${secretsDir}/lnd-wallet-password | tr -d '\n' | base64 -w0)\", \
                 \"cipher_seed_mnemonic\": $(cat "$mnemonic" | tr -d '\n')}" \
                 ${restUrl}/initwallet
 
               # Guarantees that RPC calls with cfg.cli succeed after the service is started
-              echo Wait until wallet is created
+              echo "Wait until wallet is created"
               while [[ ! -f ${networkDir}/admin.macaroon ]]; do
                 sleep 0.1
               done
             else
-              echo Unlock lnd wallet
+              echo "Unlock lnd wallet"
               ${curl} \
                 -H "Grpc-Metadata-macaroon: $(${pkgs.xxd}/bin/xxd -ps -u -c 99999 '${networkDir}/admin.macaroon')" \
                 -X POST \

modules/recurring-donations.nix

@@ -10,7 +10,7 @@ let
     pay_tallycoin() {
       NAME=$1
       AMOUNT=$2
-      echo Attempting to pay $AMOUNT sat to $NAME
+      echo "Attempting to pay $AMOUNT sat to $NAME"
       INVOICE=$(curl --socks5-hostname ${config.nix-bitcoin.torClientAddressWithPort} -d "satoshi_amount=$AMOUNT&payment_method=ln&id=$NAME&type=profile" -X POST https://api.tallyco.in/v1/payment/request/ | jq -r '.lightning_pay_request') 2> /dev/null
       if [ -z "$INVOICE" ] || [ "$INVOICE" = "null" ]; then
         echo "ERROR: did not get invoice from tallycoin"
@@ -23,10 +23,10 @@ let
         return
       fi
       if [ $DECODED_AMOUNT -eq $AMOUNT ]; then
-        echo Paying with invoice "$INVOICE"
+        echo "Paying with invoice $INVOICE"
         $LNCLI pay "$INVOICE"
       else
-        echo ERROR: requested amount and invoice amount do not match. $AMOUNT vs $DECODED_AMOUNT
+        echo "ERROR: requested amount and invoice amount do not match. $AMOUNT vs $DECODED_AMOUNT"
         return
       fi
     }