Fix wiki link of the current release in README.txt
Fix wiki link of the current release in README.txt

Fixes #3288
mefarazath/product-is,mefarazath/product-is,madurangasiriwardena/product-is,mefarazath/product-is,wso2/product-is,wso2/product-is,madurangasiriwardena/product-is,madurangasiriwardena/product-is,mefarazath/product-is,wso2/product-is,mefarazath/product-is,madurangasiriwardena/product-is,wso2/product-is,wso2/product-is,madurangasiriwardena/product-is