Fix formatting and warnigns

Author: Levi--G

src/Renci.SshNet/SshCommand.cs

@@ -492,7 +492,7 @@ public void CancelAsync(bool forceKill = false, int millisecondsTimeout = 500)
         /// <summary>
         /// Tries to send a POSIX/ANSI signal to the remote process executing the command, such as SIGINT or SIGTERM.
         /// </summary>
-        /// <param name="signal">The signal to send</param>
+        /// <param name="signal">The signal to send.</param>
         /// <returns>If the signal was sent.</returns>
         public bool TrySendSignal(CommandSignal signal)
         {
@@ -524,7 +524,7 @@ public bool TrySendSignal(CommandSignal signal)
         /// <summary>
         /// Tries to send a POSIX/ANSI signal to the remote process executing the command, such as SIGINT or SIGTERM.
         /// </summary>
-        /// <param name="signal">The signal to send</param>
+        /// <param name="signal">The signal to send.</param>
         /// <exception cref="ArgumentException">Signal was not a valid CommandSignal.</exception>
         /// <exception cref="SshConnectionException">The client is not connected.</exception>
         /// <exception cref="SshOperationTimeoutException">The operation timed out.</exception>
@@ -537,6 +537,7 @@ public void SendSignal(CommandSignal signal)
             {
                 throw new ArgumentException("Signal was not a valid CommandSignal.");
             }
+
             if (_tcs is null || _tcs.Task.IsCompleted || _channel?.IsOpen != true)
             {
                 throw new InvalidOperationException("Command has not been started.");