Update MD004/ul-style to auto-fix violations (fixes #351).

test/detailed-results-MD001-MD010.md.fixed

@@ -7,7 +7,7 @@
 * Alpha
 * Bravo
 
-- Charlie
+* Charlie
 
 * Delta
 * Echo

test/markdownlint-test-helpers.js

@@ -459,7 +459,7 @@ test("applyFix", (t) => {
 });
 
 test("applyFixes", (t) => {
-  t.plan(29);
+  t.plan(30);
   const testCases = [
     [
       "Hello world.",
@@ -905,6 +905,27 @@ test("applyFixes", (t) => {
         }
       ],
       ""
+    ],
+    [
+      " hello world",
+      [
+        {
+          "lineNumber": 1,
+          "fixInfo": {
+            "editColumn": 1,
+            "deleteCount": 1
+          }
+        },
+        {
+          "lineNumber": 1,
+          "fixInfo": {
+            "editColumn": 2,
+            "deleteCount": 1,
+            "insertText": "H"
+          }
+        }
+      ],
+      "Hello world"
     ]
   ];
   testCases.forEach((testCase) => {

test/sublist-bullet-style.json

@@ -1,6 +0,0 @@
-{
-  "default": true,
-  "MD004": {
-    "style": "sublist"
-  }
-}

test/sublist-bullet-style.md

@@ -47,12 +47,18 @@
       - item
         * item
           * item {MD004}
-          + item
+          + item {MD004}
 
 - item
   * item
     + item
       - item
         * item
-          - item {MD004}
-          + item
+          - item
+          + item {MD004}
+
+<!-- markdownlint-configure-file {
+  "ul-style": {
+    "style": "sublist"
+  }
+} -->