Contradicting github executor input examples

[jan-willem-baart]

The README examples of the github executor have contradicting input examples, ${tags} vs {tags}, see below:

Semver

"github": {
      "executor": "@jscutlery/semver:github",
      "options": {
        "tag": "${tag}",
        "notes": "${notes}"
      }
    }

Github executor

"github": {
      "executor": "@jscutlery/semver:github",
      "options": {
        "tag": "{tag}",
        "notes": "{notes}"
      }
    }