Clarify JavaDoc for WebView.loadData()

     * #loadDataWithBaseURL(String,String,String,String,String)

     * loadDataWithBaseURL()} with an appropriate base URL.

     * <p>

     * If the value of the encoding parameter is 'base64', then the data must

     * be encoded as base64. Otherwise, the data must use ASCII encoding for

     * The encoding parameter specifies whether the data is base64 or URL

     * encoded. If the data is base64 encoded, the value of the encoding

     * parameter must be 'base64'. For all other values of the parameter,

     * including null, it is assumed that the data uses ASCII encoding for

     * octets inside the range of safe URL characters and use the standard %xx

     * hex encoding of URLs for octets outside that range. For example,

     * '#', '%', '\', '?' should be replaced by %23, %25, %27, %3f respectively.

     * hex encoding of URLs for octets outside that range. For example, '#',

     * '%', '\', '?' should be replaced by %23, %25, %27, %3f respectively.

     * <p>

     * The 'data' scheme URL formed by this method uses the default US-ASCII

     * charset. If you need need to set a different charset, you should form a