Merge pull request #140 from keizer619/master

Fix codecov badge image url

README.md

@@ -2,7 +2,7 @@
 Ballerina Update Tool implementation to manage Ballerina versions
 
 ![Build master branch](https://github.com/ballerina-platform/ballerina-update-tool/workflows/Build%20master%20branch/badge.svg)
-[![codecov](https://codecov.io/gh/ballerina-platform/ballerina-update-tool/branch/branch/master/graph/badge.svg)](https://codecov.io/gh/ballerina-platform/ballerina-update-tool/branch)
+[![codecov](https://codecov.io/gh/ballerina-platform/ballerina-update-tool/branch/master/graph/badge.svg)](https://codecov.io/gh/ballerina-platform/ballerina-update-tool/branch)
 [![GitHub (pre-)release](https://img.shields.io/github/release/ballerina-platform/ballerina-update-tool/all.svg)](https://github.com/ballerina-platform/ballerina-update-tool/releases)
 [![GitHub (Pre-)Release Date](https://img.shields.io/github/release-date-pre/ballerina-platform/ballerina-update-tool.svg)](https://github.com/ballerina-platform/ballerina-update-tool/releases)
 [![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://opensource.org/licenses/Apache-2.0)