[ci skip] fix some trivial javadoc warns

api/build.gradle.kts

@@ -67,7 +67,7 @@ tasks {
             "https://google.github.io/guice/api-docs/${libs.guice.get().version}/javadoc/",
             "https://docs.oracle.com/en/java/javase/17/docs/api/",
             "https://jd.advntr.dev/api/${libs.adventure.bom.get().version}/",
-            "https://javadoc.io/doc/com.github.ben-manes.caffeine/caffeine"
+            "https://javadoc.io/doc/com.github.ben-manes.caffeine/caffeine/${libs.caffeine.get().version}/"
         )
 
         o.tags(

api/src/main/java/com/velocitypowered/api/command/CommandManager.java

@@ -44,7 +44,7 @@ public interface CommandManager {
    * @param otherAliases additional aliases
    * @throws IllegalArgumentException if one of the given aliases is already registered, or
    *         the given command does not implement a registrable {@link Command} subinterface
-   * @see Command for a list of registrable {@link Command} subinterfaces
+   * @see Command for a list of registrable Command subinterfaces
    */
   default void register(String alias, Command command, String... otherAliases) {
     register(metaBuilder(alias).aliases(otherAliases).build(), command);
@@ -65,7 +65,7 @@ public interface CommandManager {
    * @param command the command to register
    * @throws IllegalArgumentException if one of the given aliases is already registered, or
    *         the given command does not implement a registrable {@link Command} subinterface
-   * @see Command for a list of registrable {@link Command} subinterfaces
+   * @see Command for a list of registrable Command subinterfaces
    */
   void register(CommandMeta meta, Command command);