xz: Slight reword in xz man page for consistency.

Changed will print => prints in xz --robot --version description to
match --robot --info-memory description.

src/xz/xz.1

@@ -2395,7 +2395,7 @@ may have more columns, but never more than a single line.
 .
 .SS Version
 .B "xz \-\-robot \-\-version"
-will print the version number of
+prints the version number of
 .B xz
 and liblzma in the following format:
 .PP