Update README.md

Author: JorjMcKie

README.md

@@ -14,7 +14,7 @@ On **[PyPI](https://pypi.org/project/PyMuPDF)** since August 2016: [![](https://
 
 # Introduction
 
-This is **version 1.18.0 of PyMuPDF**, a Python binding with support for [MuPDF 1.17.*](http://mupdf.com/) - "a lightweight PDF, XPS, and E-book viewer".
+This is **version 1.18.0 of PyMuPDF**, a Python binding with support for [MuPDF 1.18.*](http://mupdf.com/) - "a lightweight PDF, XPS, and E-book viewer".
 
 MuPDF can access files in PDF, XPS, OpenXPS, CBZ, EPUB and FB2 (e-books) formats, and it is known for its top performance and high rendering quality.