Update README.md

Author: JorjMcKie

README.md

@@ -54,7 +54,7 @@ Have a look at the basic [demos](https://github.com/rk700/PyMuPDF/tree/master/de
 
 You have a number of options to access the documentation:
 
-* You can view it online at [Read the Docs](https://pymupdf.readthedocs.io/en/latest/).
+* You can view it online at [Read the Docs](https://pymupdf.readthedocs.io/).
 * You can download a zipped [HTML](https://github.com/rk700/PyMuPDF/tree/master/doc/html.zip) version.
 * You can download a [Windows CHM](https://github.com/JorjMcKie/PyMuPDF-optional-material/tree/master/doc/PyMuPDF.chm).
 * You can download a [PDF](https://github.com/rk700/PyMuPDF/tree/master/doc/pymupdf.pdf).