2nd attempt to fix hostreq script in PDF

zh_CN/chapter02/hostreqs.po

@@ -325,8 +325,8 @@ msgstr ""
 "else \n"
 "  echo \"awk not found\" \n"
 "fi\n"
-"\n"
 "<?hard-pagebreak?>\n"
+"\n"
 "gcc --version | head -n1\n"
 "g++ --version | head -n1\n"
 "ldd --version | head -n1 | cut -d\" \" -f2-  # glibc version\n"