Fixed code formatting in example

docs/api/index.md

@@ -126,14 +126,14 @@ Any string entered here will be inserted into the target element when the browse
 
 If you're trying to embed a base64 PDF but the browser doesn't support inline PDFs, the user will see a download link for the PDF. This option enable syou to set a custom filename for that downloaded base64 PDF.
 
-    ```js
-    var options = {
-       fallbackFileNameForBase64: "My custom fielname.pdf"
-    };
-    PDFObject.embed("myfile.pdf", "#my-container", options);
-    //If browser doesn't support inline PDFs, outputs:
-    //<p>This is a <a href='myfile.pdf'>fallback link</a></p>
-    ```
+```js
+var options = {
+    fallbackFileNameForBase64: "My custom fielname.pdf"
+};
+PDFObject.embed("myfile.pdf", "#my-container", options);
+//If browser doesn't support inline PDFs, outputs:
+//<p>This is a <a href='myfile.pdf'>fallback link</a></p>
+```
 
 **Demo:**  [Embedding a PDF encoded as a Base64 string, with custom filename](/examples/base64-filename.html){target=_blank}