chore: adjust regex from previewing images to only try to render if i…

…mage has bracket before of parentheses

src/js/easymde.js

@@ -2251,7 +2251,7 @@ EasyMDE.prototype.render = function (el) {
                 return;
             }
             if (!parentEl.hasAttribute('data-img-src')) {
-                var srcAttr = parentEl.innerText.match('\\((.*)\\)'); // might require better parsing according to markdown spec
+                var srcAttr = parentEl.innerText.match(/!\[.*?\]\((.*?)\)/); // might require better parsing according to markdown spec
                 if (!window.EMDEimagesCache) {
                     window.EMDEimagesCache = {};
                 }