Improve JavaDoc for ConfigurableApplicationContext.refresh()

[MorrisZ]

Affects: all versions

ConfigurableApplicationContext.refresh()：

	/**
	 * Load or refresh the persistent representation of the configuration,
	 * which might an XML file, properties file, or relational database schema.
	 * <p>As this is a startup method, it should destroy already created singletons
	 * if it fails, to avoid dangling resources. In other words, after invocation
	 * of that method, either all or no singletons at all should be instantiated.
	 * @throws BeansException if the bean factory could not be initialized
	 * @throws IllegalStateException if already initialized and multiple refresh
	 * attempts are not supported
	 */
	void refresh() throws BeansException, IllegalStateException;

I found this "which might an XML file" weired, shouldn't it be "which might be an XML file" ?

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[sbrannen]

Thanks for pointing out the grammatical error. I've revised the Javadoc in b769b73.