Fix PDF keys

app.py

@@ -86,10 +86,13 @@ EXAMPLES = [
 ]
 
 QUESTION_FILES = {
-    "ACZE Tech": "acze_tech.pdf",
-    "North Sea Invoice": "north_sea.pdf",
+    "Tech Invoice": "acze_tech.pdf",
+    "Energy Invoice": "north_sea.pdf",
 }
 
+for q in QUESTION_FILES.keys():
+    assert any(x[1] == q for x in EXAMPLES)
+
 FIELDS = {
     "Vendor Name": ["Vendor Name - Logo?", "Vendor Name - Address?"],
     "Vendor Address": ["Vendor Address?"],