Update datamodule docstrings

src/ptbench/scripts/datamodule.py

@@ -95,17 +95,17 @@ def list():
 @datamodule.command(
     epilog="""Examples:
 
-    1. Check if all files of the Montgomery dataset can be loaded:
+    1. Check if all files from the fold_0 of the Montgomery database can be loaded:
 
        .. code:: sh
 
-          ptbench dataset check -vv shenzhen
+          ptbench datamodule check -vv montgomery_f0
 
-    2. Check if all files of multiple installed datasets can be loaded:
+    2. Check if all files of multiple installed protocols can be loaded:
 
        .. code:: sh
 
-          ptbench dataset check -vv montgomery shenzhen
+          ptbench datamodule check -vv montgomery shenzhen
 
 """,
 )
@@ -116,7 +116,7 @@ def list():
 @click.option(
     "--limit",
     "-l",
-    help="Limit check to the first N samples in each dataset, making the "
+    help="Limit check to the first N samples in each datamodule, making the "
     "check sensibly faster.  Set it to zero to check everything.",
     required=True,
     type=click.IntRange(0),
@@ -129,6 +129,7 @@ def check(protocols, limit):
 
     errors = 0
     for protocol in protocols:
+        logger.info(f"Checking {protocol}")
         try:
             module = importlib.metadata.entry_points(group="ptbench.config")[
                 protocol