Remove trailing . from sample curl command

Author: carlzogh

aws-lambda-java-runtime-interface-client/README.md

@@ -113,7 +113,7 @@ This runs the image as a container and starts up an endpoint locally at `http://
 3) Post an event to the following endpoint using a curl command: 
 
 ```shell script
-curl -XPOST "http://localhost:9000/2015-03-31/functions/function/invocations" -d '{}'.
+curl -XPOST "http://localhost:9000/2015-03-31/functions/function/invocations" -d '{}'
 ```
 
 This command invokes the function running in the container image and returns a response.