More stringent path to files (#546)

Author: brian-rose

portal/src/blogpost.py

@@ -14,9 +14,9 @@
 
 root = Path(__file__).parent.parent
 
-# Aggregate all posts from the markdown and ipynb files
+# Aggregate all posts from the markdown files
 posts = []
-for ifile in root.rglob("posts/**/*.md"):
+for ifile in root.rglob("posts/????/*.md"):
     if "drafts" in str(ifile):
         continue