Update README.md

Author: Andrey Safonov

README.md

@@ -45,7 +45,7 @@ The endpoint converts the file to a PDF. Conversion is possible for the followin
 The endpoint converts the PDF to an optimized PDF to be used with [PDFTron WebViewer](https://www.pdftron.com/webviewer/demo/). Uses [PDFTron Node.js API](https://www.pdftron.com/api/pdfnet-node/PDFNet.PDFDoc.html#saveViewerOptimized__anchor).
 
 ##### HTTP Request
-`GET http://localhost:9000/convert/:filename`
+`GET http://localhost:9000/optimize/:filename`