logo: Trim whitespace (#64)

* logo: Trim whitespace

* logo: Trim whitespace

Author: andrewwormald

README.md

@@ -1,5 +1,5 @@
 <div align="center">
-    <img src="./logo/logo.png" style="width: 150px; margin: 30px" alt="Workflow Logo">
+    <img src="./logo/logo.png" style="width: 300px; margin: 30px" alt="Workflow Logo">
     <div  align="center" style="max-width: 750px">
         <a style="padding: 0 5px" href="https://goreportcard.com/report/github.com/luno/workflow"><img src="https://goreportcard.com/badge/github.com/luno/workflow"/></a>
         <a style="padding: 0 5px" href="https://sonarcloud.io/summary/new_code?id=luno_workflow"><img src="https://sonarcloud.io/api/project_badges/measure?project=luno_workflow&metric=coverage"/></a>