Change katex and markdownItTexmath module loading to promise

Author: UnschooledGamer

src/pages/markdownPreview/renderer.js

@@ -137,7 +137,7 @@ function collectTokens(tokens, callback) {
 
 function createMarkdownIt() {
 
-	const { katexModulePromise: katex, mdItTexmathModulePromise: markdownItTexmath } = await getKatexAndTexmathModule();
+	const { katexModulePromise: katex, mdItTexmathModulePromise: markdownItTexmath } = getKatexAndTexmathModule().then(m => m);
 
 	const md = markdownIt({
 		html: true,