Fix typo: Published on July 21th, 2019

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@11643 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

general-orig.ent

@@ -7,7 +7,7 @@
 <!ENTITY short-versiond  "systemd">
 <!ENTITY generic-versiond "systemd"> 
 
-<!ENTITY releasedate     "July 21th, 2019">
+<!ENTITY releasedate     "July 21st, 2019">
 
 <!ENTITY copyrightdate   "1999-2019"><!-- jhalfs needs a literal dash, not &ndash; -->
 <!ENTITY milestone       "9.0">