update readme to include wiki link

README.md

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 # A Timed Interview Test (~5 days)
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+## A more readable version is available on the wiki
+[wiki](https://github.com/stablecaps/guides-policies-and-coding-standards/wiki/Terraform-&-Serverless-1-%E2%80%90-overview)
+
 **Step 1**
 A company allows their users to upload pictures to an S3 bucket. These pictures are always in the .jpg format. The company wants these files to be stripped from any exif metadata before being shown on their website. Pictures are uploaded to an S3 bucket A. Create a system that retrieves .jpg files when they are uploaded to the S3 bucket A, removes any exif metadata, and save them to another S3 bucket B. The path of the files should be the same in buckets A and B.