Fix invalid option reference; spell check (michalmuskala#83)

Author: dimitarvp

lib/jason.ex

@@ -94,8 +94,8 @@ defmodule Jason do
       * `:javascript_safe` - additionally escapes the LINE SEPARATOR (U+2028)
         and PARAGRAPH SEPARATOR (U+2029) characters to make the produced JSON
         valid JavaSciprt.
-      * `:html_safe` - similar to `:javascript`, but also escapes the `/`
-        caracter to prevent XSS.
+      * `:html_safe` - similar to `:javascript_safe`, but also escapes the `/`
+        character to prevent XSS.
       * `:unicode_safe` - escapes all non-ascii characters.
 
     * `:maps` - controls how maps are encoded. Possible values are: