blog: fix typo

service/blog.md

@@ -91,7 +91,7 @@ Creating new web content for a Lektor site essentially entails editing directori
  3. Open the personal fork project and click the `Web IDE` button
  4. On the left column, click the `New Directory` icon
  5. Enter `content/blog/<blog-post-slug>` (`blog-post-slug` will be part of the blog post permalink)
- 6. In the left colum still, navigate to the new directory and open the drop-down menu to the right of the new directory item
+ 6. In the left column still, navigate to the new directory and open the drop-down menu to the right of the new directory item
  7. Click `New file` to create a new file in that directory
  8. Enter `contents.lr` as the new file name
  9. In the text editor which appears, draft the new blog post (Markdown accepted in `summary` and `body` fields, see below for template)