doc(readme): update readme title

README.md

@@ -1,4 +1,4 @@
-# OVPM - OpenVPn Manager
+# OVPM - OpenVPN Management Server
 
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 [![GitHub version](https://badge.fury.io/gh/cad%2Fovpm.svg)](https://badge.fury.io/gh/cad%2Fovpm)