Update README.md

Author: tobespc

README.md

@@ -137,7 +137,7 @@ The Node Application Metrics to StatsD Connector is licensed using an Apache v2.
 3.0.0
 
 #### Version History
-3.0.0 Remove fixed version of appmetrics in Package.json
+3.0.0 Remove fixed version of appmetrics in package.json
 
 2.0.0 Update appmetrics version to 3.x.x