Fix observations

Author: juankx-bodo

pydough/metadata/collections/collection_metadata.py

@@ -48,7 +48,7 @@ def __init__(
             PropertyMetadata,
         )
 
-        is_valid_name.verify(name, f"name {name!r}")
+        is_valid_name.verify(name, f"collection name {name!r}")
         HasType(GraphMetadata).verify(graph, f"graph {name!r}")
 
         self._graph: GraphMetadata = graph

tests/test_metadata_errors.py

@@ -85,12 +85,12 @@ def test_missing_property(get_sample_graph: graph_fetcher) -> None:
         ),
         pytest.param(
             "BAD_COLLECTION_NAME_1",
-            "name '0' must be a string that is a valid Python identifier",
+            "collection name '0' must be a string that is a valid Python identifier",
             id="BAD_COLLECTION_NAME_1",
         ),
         pytest.param(
             "BAD_COLLECTION_NAME_2",
-            "name 'Invalid name' must be a string that is a valid Python identifier",
+            "collection name 'Invalid name' must be a string that is a valid Python identifier",
             id="BAD_COLLECTION_NAME_2",
         ),
         pytest.param(
@@ -100,12 +100,12 @@ def test_missing_property(get_sample_graph: graph_fetcher) -> None:
         ),
         pytest.param(
             "BAD_PROPERTY_NAME_2",
-            "name '0' must be a string that is a valid Python identifier",
+            "collection name '0' must be a string that is a valid Python identifier",
             id="BAD_PROPERTY_NAME_2",
         ),
         pytest.param(
             "BAD_TABLE_NAME",
-            "name 'invalid table_name' must be a string that is a valid Python identifier",
+            "collection name 'invalid table_name' must be a string that is a valid Python identifier",
             id="BAD_TABLE_NAME",
         ),
         pytest.param(