Use two tildes to toggle delete syntax (#477)

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Author: remcohaszing

.changeset/gold-meals-bathe.md

@@ -0,0 +1,7 @@
+---
+'@mdx-js/language-service': patch
+'@mdx-js/language-server': patch
+'vscode-mdx': patch
+---
+
+Use two tildes to toggle delete syntax

packages/language-server/test/syntax-toggle.test.js

@@ -41,14 +41,14 @@ test('delete', async () => {
       changes: {
         'memory://1': [
           {
-            newText: '~',
+            newText: '~~',
             range: {
               end: {character: 0, line: 0},
               start: {character: 0, line: 0}
             }
           },
           {
-            newText: '~',
+            newText: '~~',
             range: {
               end: {character: 5, line: 0},
               start: {character: 5, line: 0}

packages/language-service/lib/service-plugin.js

@@ -83,7 +83,7 @@ export function createMdxServicePlugin(options) {
                 context,
                 options,
                 'delete',
-                '~',
+                '~~',
                 args[0],
                 args[1]
               )