lnrpc: replace /// and /** with // and /*

lnrpc/watchtowerrpc/watchtower.proto

@@ -7,7 +7,7 @@ option go_package = "github.com/lightningnetwork/lnd/lnrpc/watchtowerrpc";
 // Watchtower is a service that grants access to the watchtower server
 // functionality of the daemon.
 service Watchtower {
-    /** lncli: tower info
+    /* lncli: tower info
     GetInfo returns general information concerning the companion watchtower
     including its public key and URIs where the server is currently
     listening for clients.
@@ -19,12 +19,12 @@ message GetInfoRequest {
 }
 
 message GetInfoResponse {
-    /// The public key of the watchtower.
+    // The public key of the watchtower.
     bytes pubkey = 1;
 
-    /// The listening addresses of the watchtower.
+    // The listening addresses of the watchtower.
     repeated string listeners = 2;
 
-    /// The URIs of the watchtower.
+    // The URIs of the watchtower.
     repeated string uris = 3;
 }