Fix typo in check for required perl modules for check_ssl_validity

configure.ac

@@ -1502,7 +1502,7 @@ else
 	AC_MSG_WARN([Tried $PERL - install Net::SNMP perl module if you want to use the perl snmp plugins])
 fi
 
-if ( $PERL -M"Crypt::X509" -M"Date::Parse" -M"LWP::Simple" -M "Text::Glob" -e 'exit' 2>/dev/null )
+if ( $PERL -M"Crypt::X509" -M"Date::Parse" -M"LWP::Simple" -M"Text::Glob" -e 'exit' 2>/dev/null )
 then
   AC_MSG_CHECKING(for Crypt::X509, Date::Parse, LWP::Simple, Text::Glob perl modules)
   AC_MSG_RESULT([found])