Update documentation

Author: vitalijr2

readme.md

@@ -17,7 +17,7 @@ The sample code, see the folder **[example](example)** :
 ```java
 @Override
 public String handleRequest(Map<String, Object> input,Context context){
-  MDC.put(LambdaLogger.AWS_REQUEST_ID,context.getAwsRequestId());
+  MDC.put(LambdaLogger.AWS_REQUEST_ID, context.getAwsRequestId());
   logger.trace("trace message");
   logger.debug("debug message");
   logger.info("info message");

src/site/markdown/index.md

@@ -17,7 +17,7 @@ The sample code, see the folder **[example][]** :
 ```language-java
 @Override
 public String handleRequest(Map<String, Object> input,Context context){
-  MDC.put(LambdaLogger.AWS_REQUEST_ID,context.getAwsRequestId());
+  MDC.put(LambdaLogger.AWS_REQUEST_ID, context.getAwsRequestId());
   logger.trace("trace message");
   logger.debug("debug message");
   logger.info("info message");