Update README.md

Author: pitbulk

README.md

@@ -16,7 +16,7 @@ This version supports Python3, There is a separate version that only support Pyt
 
 Update python-saml to 1.4.0, this version includes a fix for the [CVE-2017-11427](https://www.cvedetails.com/cve/CVE-2017-11427/) vulnerability.
 
-That version also change how calculate fingerprint method works, and will expect as input a formatted x509 certificate
+This version also changes how the calculate fingerprint method works, and will expect as input a formatted x509 certificate
 
 Update python-saml3 to 1.2.6 that adds the use defusedxml that will prevent XEE and other attacks based on the abuse of XML. (CVE-2017-9672)