add 'chart.name' template description in 'Available Templates' section

Author: matheusfm

README.md

@@ -82,6 +82,7 @@ The templates generated by the tool are shown below, and can be included in your
 | Name | Description |
 |------|-------------|
 | chart.header              | The main heading of the generated markdown file |
+| chart.name                | The _name_ field from the chart's `Chart.yaml` file |
 | chart.deprecationWarning  | A deprecation warning which is displayed when the _deprecated_ field from the chart's `Chart.yaml` file is `true` |
 | chart.description         | A description line containing the _description_ field from the chart's `Chart.yaml` file, or "" if that field is not set |
 | chart.version             | The _version_ field from the chart's `Chart.yaml` file |