Minor change in examples readme

Author: seadeep42

examples/README.md

@@ -82,7 +82,7 @@ ros.getTopics((topics) => {
 });
 ```
 
-### Get the value of a param
+### Set the value of a param
 ```ecmascript 6
 const maxVelX = new Param({
   ros,
@@ -92,7 +92,7 @@ const maxVelX = new Param({
 maxVelX.set(0.8);
 ```
 
-### Set the value of a param
+### Get the value of a param
 ```ecmascript 6
 const favoriteColor = new Param({
   ros,