Clean up the javadoc to pass java 8's doclint

By: Thinkofdeath <thinkofdeath@spigotmc.org>

paper-api/src/main/java/org/bukkit/command/Command.java

@@ -57,7 +57,14 @@ public abstract class Command {
     public abstract boolean execute(CommandSender sender, String commandLabel, String[] args);
 
     /**
+     * Executed on tab completion for this command, returning a list of
+     * options the player can tab through.
+     *
      * @deprecated This method is not supported and returns null
+     * @param sender Source object which is executing this command
+     * @param args All arguments passed to the command, split via ' '
+     * @return a list of tab-completions for the specified arguments. This
+     *     will never be null. List may be immutable.
      */
     @Deprecated
     public List<String> tabComplete(CommandSender sender, String[] args) {

paper-api/src/main/java/org/bukkit/command/defaults/HelpCommand.java

@@ -165,7 +165,7 @@ public class HelpCommand extends VanillaCommand {
 
     /**
      * Computes the Dameraur-Levenshtein Distance between two strings. Adapted
-     * from the algorithm at <a href="http://en.wikipedia.org/wiki/Damerau–Levenshtein_distance">Wikipedia: Damerau–Levenshtein distance</a>
+     * from the algorithm at <a href="http://en.wikipedia.org/wiki/Damerau%E2%80%93Levenshtein_distance">Wikipedia: Damerau–Levenshtein distance</a>
      *
      * @param s1 The first string being compared.
      * @param s2 The second string being compared.