Fix HookRegistrar javadocs

Author: prdoyle

bosk-core/src/main/java/works/bosk/HookRegistrar.java

@@ -11,14 +11,14 @@ public interface HookRegistrar {
 	 * <p>
 	 * The <code>scope</code> reference can be parameterized.
 	 * Upon any change to any matching node, or any parent or child of a matching node,
-	 * the <code>action</code> will be called with a {@link Bosk.ReadContext} that captures
+	 * the <code>hook</code> will be called with a {@link Bosk.ReadContext} that captures
 	 * the state immediately after the update was applied.
-	 * The <code>action</code> will receive an argument that is the <code>scope</code> reference
+	 * The <code>hook</code> will receive an argument that is the <code>scope</code> reference
 	 * with all its parameters (if any) bound.
 	 *
 	 * <p>
 	 * For a given update, hooks are called in the order they were registered.
-	 * Updates performed by the <code>action</code> could themselves trigger hooks.
+	 * Updates performed by the <code>hook</code> could themselves trigger hooks.
 	 * Such "hook cascades" are performed in breadth-first order, and are queued
 	 * as necessary to achieve this; hooks are <em>not</em> called recursively.
 	 * Hooks may be called on any thread, including one of the threads that