Fix typos with cspell (#6972)

wpiutil/src/main/java/edu/wpi/first/util/WPIUtilJNI.java

@@ -138,7 +138,7 @@ public class WPIUtilJNI {
    * multiple-consumer scenario.
    *
    * @param initialCount initial value for the semaphore's internal counter
-   * @param maximumCount maximum value for the samephore's internal counter
+   * @param maximumCount maximum value for the semaphore's internal counter
    * @return Semaphore handle
    */
   public static native int createSemaphore(int initialCount, int maximumCount);

wpiutil/src/main/java/edu/wpi/first/util/protobuf/Protobuf.java

@@ -103,10 +103,10 @@ public interface Protobuf<T, MessageType extends ProtoMessage<?>> {
   }
 
   /**
-   * Returns whether or not objects are cloneable using the clone() method. Clonable objects must
+   * Returns whether or not objects are cloneable using the clone() method. Cloneable objects must
    * also be comparable using the equals() method. Default implementation returns false.
    *
-   * @return True if object is clonable
+   * @return True if object is cloneable
    */
   default boolean isCloneable() {
     return false;

wpiutil/src/main/java/edu/wpi/first/util/struct/Struct.java

@@ -203,10 +203,10 @@ public interface Struct<T> {
   }
 
   /**
-   * Returns whether or not objects are cloneable using the clone() method. Clonable objects must
+   * Returns whether or not objects are cloneable using the clone() method. Cloneable objects must
    * also be comparable using the equals() method. Default implementation returns false.
    *
-   * @return True if object is clonable
+   * @return True if object is cloneable
    */
   default boolean isCloneable() {
     return false;