Update docs to reflect about metrics coming soon (#70)

Author: pankajagrawal16

README.md

@@ -2,7 +2,7 @@
 
 ![aws provider](https://img.shields.io/badge/provider-AWS-orange?logo=amazon-aws&color=ff9900)
 
-A suite of utilities for AWS Lambda Functions that makes tracing with AWS X-Ray, structured logging and creating custom metrics asynchronously easier.
+A suite of utilities for AWS Lambda Functions that makes tracing with AWS X-Ray, structured logging and creating custom metrics asynchronously(Coming soon!) easier.
 
 **[📜Documentation](https://awslabs.github.io/aws-lambda-powertools-java/)** | **[Feature request](https://github.com/awslabs/aws-lambda-powertools-java/issues/new?assignees=&labels=feature-request%2C+triage&template=feature_request.md&title=)** | **[🐛Bug Report](https://github.com/awslabs/aws-lambda-powertools-java/issues/new?assignees=&labels=bug%2C+triage&template=bug_report.md&title=)** | **[Detailed blog post](https://aws.amazon.com/blogs/opensource/simplifying-serverless-best-practices-with-lambda-powertools/)**
 

docs/content/index.mdx

@@ -3,7 +3,7 @@ title: Homepage
 description: AWS Lambda Powertools Java
 ---
 
-Powertools is a suite of utilities for AWS Lambda Functions that makes tracing with AWS X-Ray, structured logging and creating custom metrics asynchronously easier.
+Powertools is a suite of utilities for AWS Lambda Functions that makes tracing with AWS X-Ray, structured logging and creating custom metrics asynchronously(Coming soon!) easier.
 
 ## Install
 
@@ -64,7 +64,7 @@ And configure the aspectj-maven-plugin to compile-time weave (CTW) the aws-lambd
     </plugins>
 </build>
 ```
-**Note:** If you are working with lambda on runtime post java8, please refer [issue](https://github.com/awslabs/aws-lambda-powertools-java/issues/50) for workaround
+**Note:** If you are working with lambda function on runtime post java8, please refer [issue](https://github.com/awslabs/aws-lambda-powertools-java/issues/50) for workaround
 
 ## Tenets