chore: rename npm script test:cover to test:coverage

Author: remarkablemark

.travis.yml

@@ -4,11 +4,11 @@ node_js:
 install:
   - npm install
 script:
-  # Lint last commit from history
+  # Lint last commit message from history
   - npx commitlint --from=HEAD~1
   - npm run lint
   - npm run dtslint
-  - npm run test:cover
+  - npm run test:coverage
   - npm run build
   - npm run benchmark
 after_script:

README.md

@@ -207,7 +207,7 @@ $ npm test
 Run tests with coverage:
 
 ```sh
-$ npm run test:cover
+$ npm run test:coverage
 ```
 
 Lint files:

package.json

@@ -17,7 +17,7 @@
     "prepublishOnly": "npm run build",
     "release": "standard-version --no-verify",
     "test": "mocha",
-    "test:cover": "istanbul cover _mocha -- -R spec \"test/**/*\""
+    "test:coverage": "istanbul cover _mocha -- -R spec \"test/**/*\""
   },
   "repository": {
     "type": "git",