Update vote validation and argument naming

Updated the method "votePassed" in "ActiveVoteToMute" to consider a scenario where no votes have been made for muting. Also, corrected the argument name from "yesno" to "yesNo" in "VoteToMuteHelper" to match with its name in the command constructor

velocity/src/main/java/com/alttd/velocitychat/commands/VoteToMuteHelper.java

@@ -197,7 +197,7 @@ public class VoteToMuteHelper {
                                         }
                                     }
 
-                                    String vote = commandContext.getArgument("yesno", String.class);
+                                    String vote = commandContext.getArgument("yesNo", String.class);
                                     switch (vote.toLowerCase()) {
                                         case "yes" -> activeVoteToMute.vote(source.getUniqueId(), true);
                                         case "no" -> activeVoteToMute.vote(source.getUniqueId(), false);

velocity/src/main/java/com/alttd/velocitychat/commands/vote_to_mute/ActiveVoteToMute.java

@@ -127,7 +127,7 @@ public class ActiveVoteToMute {
 
     public boolean votePassed() {
         double totalVotes = (votedFor.size() + votedAgainst.size());
-        if (totalVotes == 0) {
+        if (totalVotes == 0 || votedFor.isEmpty()) {
             return false;
         }
         if (totalVotes / totalEligibleVoters < 0.6) {