fix authors path regex and test print for notebook checker

Author: fcmsilva

.pre-commit-config.yaml

@@ -62,4 +62,4 @@ repos:
         name: author-check
         entry: resources/author-check.py
         language: system
-        files: authors/*\.toml
+        files: authors/.*\.toml

resources/toml-check.py

@@ -12,6 +12,7 @@ def error(msg):
 
 for f in sys.argv[1:]:
 
+    print(f"Checking {f}...")
     with open(f, 'r') as infile:
         info = tomllib.loads(infile.read())