fix: lint error, add badge in document

README.md

@@ -10,7 +10,7 @@ This tool will check type of all identifiers, `the code coverage` = `the count o
 [![Build Status: Windows](https://ci.appveyor.com/api/projects/status/github/plantain-00/type-coverage?branch=master&svg=true)](https://ci.appveyor.com/project/plantain-00/type-coverage/branch/master)
 [![npm version](https://badge.fury.io/js/type-coverage.svg)](https://badge.fury.io/js/type-coverage)
 [![Downloads](https://img.shields.io/npm/dm/type-coverage.svg)](https://www.npmjs.com/package/type-coverage)
-![](https://img.shields.io/badge/dynamic/json.svg?label=type-coverage&prefix=%E2%89%A5&suffix=%&query=$.typeCoverage.atLeast&uri=https%3A%2F%2Fraw.luolix.top%2Fplantain-00%2Ftype-coverage%2Fmaster%2Fpackage.json)
+[![type-coverage](https://img.shields.io/badge/dynamic/json.svg?label=type-coverage&prefix=%E2%89%A5&suffix=%&query=$.typeCoverage.atLeast&uri=https%3A%2F%2Fraw.luolix.top%2Fplantain-00%2Ftype-coverage%2Fmaster%2Fpackage.json)](https://github.com/plantain-00/type-coverage)
 
 ## install
 
@@ -36,3 +36,11 @@ name | type | description
     "atLeast": 99 // same as --at-least
   },
 ```
+
+## add dynamic badges of type coverage
+
+Use your own project url:
+
+```md
+[![type-coverage](https://img.shields.io/badge/dynamic/json.svg?label=type-coverage&prefix=%E2%89%A5&suffix=%&query=$.typeCoverage.atLeast&uri=https%3A%2F%2Fraw.luolix.top%2Fplantain-00%2Ftype-coverage%2Fmaster%2Fpackage.json)](https://github.com/plantain-00/type-coverage)
+```