altered some texts

frontend/src/Components/MarkdownEditor.svelte

@@ -124,9 +124,10 @@
         <textarea bind:value={editValue.source} onkeyup={typed} autofocus={!simple}></textarea>
         <span class="buttons">
             <button class="cancel" onclick={e => editing = false}>{t('cancel')}</button>
+            <span>{t('markdown_supported')}</span>
             <button class="save" onclick={doSave}>{t('save')}</button>
         </span>
     </div>
 {/if}
-    <svelte:element this={type} {onclick} {oncontextmenu} class={{editable}} title={t('long_click_to_edit')} >{@html target(editValue.rendered)}</svelte:element>
+    <svelte:element this={type} {onclick} {oncontextmenu} class={{editable}} title={t('right_click_to_edit')} >{@html target(editValue.rendered)}</svelte:element>
 </div>