Fix typos in Ix javadocs (#5)

* Fix typos in Ix javadocs

* Fix typo: Interable -> Iterable

src/main/java/ix/Ix.java

@@ -203,7 +203,7 @@ public static <T> Ix<T> empty() {
     }
 
     /**
-     * Wraps the given Interable source into an Ix instance (if
+     * Wraps the given Iterable source into an Ix instance (if
      * not already an Ix subclass).
      * <p>
      * The result's iterator() forwards the remove() calls to the source's
@@ -2269,7 +2269,7 @@ public final void print(CharSequence separator, int charsPerLine) {
                 System.out.print(separator);
                 len += separator.length();
                 if (len > charsPerLine) {
-                    System.out.println();;
+                    System.out.println();
                     System.out.print(s);
                     len = s.length();
                 } else {
@@ -2394,9 +2394,9 @@ public final T single() {
 
 
     /**
-     * Returns the single element of this sequence, the defaltValue
+     * Returns the single element of this sequence, defalutValue
      * if this sequence is empty or IndexOutOfBoundsException if this sequence has more
-     * than on element
+     * than one element
      * @param defaultValue the value to return if this sequence is empty
      * @return the single element of the sequence
      * @throws IndexOutOfBoundsException if the sequence has more than one element