Fix missing . (dot) in issue templates

templates/repo/issue/create.tmpl

@@ -110,7 +110,7 @@
                     <div class="form-group">
                         <!--
                         <input type="hidden" name="attachments" value="" />
-                        <button data-accept="{{AllowedTypes}}" data-comment-id="0" class="btn-default btn attachment-add" id="attachments-button">Add Attachments...</button>
+                        <button data-accept="{{.AllowedTypes}}" data-comment-id="0" class="btn-default btn attachment-add" id="attachments-button">Add Attachments...</button>
                         -->
 
                         <input type="hidden" value="id" name="repo-id"/>

templates/repo/issue/view.tmpl

@@ -134,7 +134,7 @@
                                 <div class="form-group">
                                     <!--
                                     <input type="hidden" name="attachments" value="" />
-                                    <button data-accept="{{AllowedTypes}}" class="btn-default btn attachment-add" id="attachments-button">Add Attachments...</button>
+                                    <button data-accept="{{.AllowedTypes}}" class="btn-default btn attachment-add" id="attachments-button">Add Attachments...</button>
                                     -->
 
                                     {{if .IsIssueOwner}}{{if .Issue.IsClosed}}