Grammar fix

Doc/lib/libhashlib.tex

@@ -31,7 +31,7 @@ of the strings fed to it so far using the \method{digest()} or
 Constructors for hash algorithms that are always present in this module are
 \function{md5()}, \function{sha1()}, \function{sha224()}, \function{sha256()},
 \function{sha384()}, and \function{sha512()}.  Additional algorithms may also
-be available depending upon the OpenSSL library python uses on your platform.
+be available depending upon the OpenSSL library that Python uses on your platform.
 \index{OpenSSL}
 
 For example, to obtain the digest of the string \code{'Nobody inspects