Cleanup docs for _.callback. [ci skip]

lodash.src.js

@@ -10291,10 +10291,11 @@
     }
 
     /**
-     * Creates a function bound to an optional `thisArg`. If `func` is a property
-     * name the created callback returns the property value for a given element.
-     * If `func` is an object the created callback returns `true` for elements
-     * that contain the equivalent object properties, otherwise it returns `false`.
+     * Creates a function that invokes `func` with the `this` binding of `thisArg`
+     * and arguments of the created function. If `func` is a property name the
+     * created callback returns the property value for a given element. If `func`
+     * is an object the created callback returns `true` for elements that contain
+     * the equivalent object properties, otherwise it returns `false`.
      *
      * @static
      * @memberOf _