README.md: Extend the documentation

README.md

@@ -12,7 +12,7 @@ and combines it with managemnet functionality of snapper.
 `dsnap-sync` creates backups as btrfs-snapshots on a selectable target device.
 Plug in and mount any btrfs-formatted device to your system. Supported devices
 may be either local USB drives, but can be as well remote accessible RAID drives.
-If possible the backup process will sending incremental snapshots the target drive.
+If possible the backup process will send incremental snapshots to the target drive.
 If the snapshot will be stored on a remote host, it is secured with ssh.
 
 The tool is implemented as a posix shell script, to keep the footprint small (dash).
@@ -45,10 +45,10 @@ Either use a UUID, a SUBVOLID or a TARGET name (read 'mount point').
 ### Scheduled backups
 
 A scheduled run will take all needed parameters from config options.
-`dsnap-sync` does support systemd.timer units. Please refer to related paragraph below.
+`dsnap-sync` does support systemd.timer units. Please refer to related paragraph [systemd](https://github.com/rzerres/dsnap-sync#systemd).
 
 ## Requirements
-
+g
 beside the shell itself, `dsnap-sync`relies on external tools to achieve its goal.
 At run-time their availability is checked. Following tools are are used:
 
@@ -165,7 +165,7 @@ A template `dsnap-sync` is included in the package for your convenience.
 
     # dsnap-sync --config data2 --remote 172.16.0.3 --target /data --noconfirm
 
-## systemd example
+## systemd
 
 ### service