Update install.sh

install.sh

@@ -3,7 +3,7 @@
 if [ `id -u` -eq 0 ]
 then
   cp log2ram.service /etc/systemd/system/log2ram.service
-  chmod 644 /etc/systemd/system/log2ram.server
+  chmod 644 /etc/systemd/system/log2ram.service
   cp log2ram /usr/local/bin/log2ram
   chmod a+x /usr/local/bin/log2ram
   systemctl enable log2ram