Merge pull request 'fix spelling in post service' (#8) from cybershell-patch-1 into develop

Reviewed-on: https://git.digitaltelepresence.com/digital-telepresence/dtp-sites/pulls/8

app/services/post.js

@@ -66,7 +66,7 @@ class PostService extends SiteService {
     if (!author.permissions.canAuthorPosts) {
       throw new SiteError(403, 'You are not permitted to author posts');
     }
-    if ((postDefinition.status === 'published') && !author.permisstions.canPublishPosts) {
+    if ((postDefinition.status === 'published') && !author.permissions.canPublishPosts) {
       throw new SiteError(403, 'You are not permitted to publish posts');
     }