Replace deprecated -header rules with original -heading rules (#110)

Author: chadfawcett

.markdownlint-cli2.cjs

@@ -3,7 +3,7 @@ const options = require('./index.js').init({
     "heading-increment": true,
     "no-alt-text": true,
     "single-h1": true,
-    "no-emphasis-as-header": true,
+    "no-emphasis-as-heading": true,
     "first-line-heading": true
 })
 module.exports = {

style/accessibility.json

@@ -1,8 +1,8 @@
 {
     "no-alt-text": true,
     "no-default-alt-text": true,
-    "no-duplicate-header": true,
-    "no-emphasis-as-header": true,
+    "no-duplicate-heading": true,
+    "no-emphasis-as-heading": true,
     "no-generic-link-text": true,
     "heading-increment": true,
     "no-space-in-links": false,

test/usage.test.js

@@ -15,11 +15,11 @@ describe("usage", () => {
     test("default options returned with no arguments provided", () => {
       const options = githubMarkdownLint.init();
       expect(options).toEqual({
-        "no-duplicate-header": true,
+        "no-duplicate-heading": true,
         "ol-prefix": "ordered",
         "no-space-in-links": false,
         "single-h1": true,
-        "no-emphasis-as-header": true,
+        "no-emphasis-as-heading": true,
         "no-empty-alt-text": false,
         "heading-increment": true,
         "no-generic-link-text": true,