override bootstrap colors for link preview in the link-shared dialog

customize.dist/src/less2/include/alertify.less

@@ -166,6 +166,9 @@
                     color: @cryptpad_text_col;
                     text-decoration: underline;
                 }
+                pre.cp-link-preview {
+                    color: @cryptpad_text_col;
+                }
                 .cp-info-menu-container {
                     .logo-block {
                         text-align: center;

www/common/common-ui-elements.js

@@ -3064,7 +3064,7 @@ define([
 
         var content = h('div', [
             UI.setHTML(h('p'), Messages._getKey('notification_openLink', [name, user])),
-            h('pre', url),
+            h('pre.cp-link-preview', url),
             UIElements.getVerifiedFriend(common, data.curve, user)
         ]);
         var clicked = false;