(chore) some cleanup (#1900)

Author: dummdidumm

docs/preprocessors/typescript.md

@@ -112,7 +112,7 @@ Make sure to follow the [setup instructions](/packages/svelte-vscode#setup)
 The following code may throw an error like `Variable 'show' implicitly has type 'any' in some locations where its type cannot be determined.`, if you have stricter type settings:
 
 ```html
-<script lang="typescript">
+<script lang="ts">
     export let data: { someKey: string | null };
 
     $: show = !!data.someKey; // <-- `show` has type `any`

packages/language-server/test/plugins/typescript/features/diagnostics/fixtures/ignore-false-positives/input.svelte

@@ -1,4 +1,4 @@
-<script lang="typescript">
+<script lang="ts">
 export let noUsedBeforeDeclare: number, anotherUsed: boolean;
 const blubb = 2;
 $: bla = blubb * 2;

packages/language-server/test/plugins/typescript/testfiles/code-actions/codeactions.svelte

@@ -1,4 +1,4 @@
-<script lang="typescript">
+<script lang="ts">
 import {C} from 'blubb';
 import {B} from 'bla';
 import {A} from 'bla';

packages/language-server/test/plugins/typescript/testfiles/definitions.svelte

@@ -1,4 +1,4 @@
-<script lang="typescript">
+<script lang="ts">
 import {blubb} from './definitions';
 import ImportedFile from './imported-file.svelte';
 function bla() {return true;}

packages/language-server/test/plugins/typescript/testfiles/diagnostics/diagnostics.svelte

@@ -1 +1 @@
-<script lang="typescript">const asd: string = true;asd;</script>
+<script lang="ts">const asd: string = true;asd;</script>

packages/language-server/test/plugins/typescript/testfiles/documentation.svelte

@@ -1,4 +1,4 @@
-<script lang="typescript">
+<script lang="ts">
     import { foo } from './documentation'
 
     fo

packages/language-server/test/plugins/typescript/testfiles/find-references-ignore-generated.svelte

@@ -1,4 +1,4 @@
-<script lang="typescript">
+<script lang="ts">
     let a: string | boolean = null as any;
     let promise = Promise.resolve(true);
 </script>

packages/language-server/test/plugins/typescript/testfiles/imported-file.svelte

@@ -1 +1 @@
-<script lang="typescript">export let prop: string;</script>
+<script lang="ts">export let prop: string;</script>

packages/language-server/test/plugins/typescript/testfiles/rename/rename-ignore-generated.svelte

@@ -1,4 +1,4 @@
-<script lang="typescript">
+<script lang="ts">
     let a: string | boolean = null as any;
     let promise = Promise.resolve(true);
 </script>

packages/language-server/test/plugins/typescript/testfiles/signature-help/signature-help.svelte

@@ -1,4 +1,4 @@
-<script lang="typescript">
+<script lang="ts">
     import { foo } from '../documentation'
 
     foo()