Correct a typo in the README. Fixes mathiasbynens#26.

README.md

@@ -31,7 +31,7 @@ The plugin automatically adds `class="placeholder"` to the elements who are curr
 
 * Works in all A-grade browsers, including IE6.
 * Automatically checks if the browser natively supports the HTML5 `placeholder` attribute for `input` and `textarea` elements. If this is the case, the plugin won’t do anything. If `@placeholder` is only supported for `input` elements, the plugin will leave those alone and apply to `textarea`s exclusively. (This is the case for Safari 4, Opera 11.00, and possibly other browsers.)
-* Caches the results of its two feature tests in `jQuery.fn.placeholder.input` and `jQuery.fn.placeholder.placeholder`. For example, if `@placeholder` is natively supported for `input` elements, `jQuery.fn.placeholder.input` will be `true`. After loading the plugin, you can re-use these properties in your own code.
+* Caches the results of its two feature tests in `jQuery.fn.placeholder.input` and `jQuery.fn.placeholder.textarea`. For example, if `@placeholder` is natively supported for `input` elements, `jQuery.fn.placeholder.input` will be `true`. After loading the plugin, you can re-use these properties in your own code.
 * Makes sure it never causes duplicate IDs in your DOM, even in browsers that need an extra `input` element to fake `@placeholder` for password inputs. This means you can safely do stuff like:
 
       <label for="bar">Example label</label>