Update README.md

README.md

 [PACKAGE]: ../../raw/master/mkp/nvdct-0.8.9-20240518.mkp "nvdct-0.8.9-20240518.mkp"
-Network Visualization Data Creation Tool (NVDCT)
+# Network Visualization Data Creation Tool (NVDCT)
 
 This script creates the topology data file needed for the [Checkmk Exchange Network visualization](https://exchange.checkmk.com/p/network-visualization) plugin by Andreas Boesl and [schnetz](https://exchange.checkmk.com/u/schnetz).\
 For more information see [Checkmk forum Network Visualization](https://forum.checkmk.com/t/network-visualization/41680). 
 
-Features:
+### Features:
 - Create Layer 2 (CDP/LLDP) topology data 
 - Create Layer 3 (IPv4) topology data -> CMK2.3.0 only
 - Highlight conetion issues (Speed, Duplex/Half duplex, Native VLAN)
@@ -366,7 +366,7 @@ First check your HW/SW inventory if it not contains the data needed to create th
 ---
 ### Sample Output
 
-Sample output
+Sample output of NVDCT.
 
 ```
 OMD[build]:~$ ~/local/bin/nvdct/nvdct.py  -u ~/local/bin/nvdct/nvdct.toml