docs: Update section titles for clarity in OLTP, OLAP, and vector search examples

Author: tae898

bindings/python/docs/examples/07_stackoverflow_tables_oltp.md

@@ -105,7 +105,7 @@ Insert rows are synthetic. The source uses `build_synthetic_row()`:
 - `DATETIME` fields get the current UTC timestamp.
 - string fields get `synthetic_<Table>_<Field>_<Id>`.
 
-## Exact Query Templates
+## Query Suite
 
 ### ArcadeDB SQL
 

bindings/python/docs/examples/08_stackoverflow_tables_olap.md

@@ -34,7 +34,7 @@ python 08_stackoverflow_tables_olap.py \
   --mem-limit 4g
 ```
 
-## Query Suite Contract
+## Query Suite Definition
 
 The source defines the workload once in `QUERY_DEFS`. For ArcadeDB SQL, SQLite, and
 DuckDB, the exact SQL below is executed as written. PostgreSQL runs the same logical

bindings/python/docs/examples/12_vector_search.md

@@ -230,7 +230,7 @@ collection.search(
 
 The source retries transient Milvus search errors before failing the run.
 
-## Result Contract
+## Result Format
 
 Every backend returns the same result fields:
 

bindings/python/tests/test_graph_algorithms_sql.py

@@ -93,7 +93,7 @@ def test_graph_dijkstra_sql_weighted_path_shape(temp_db_path):
 
 
 def test_graph_astar_sql_weighted_path_shape(temp_db_path):
-    """`astar` returns a weighted path compatible with the same edge-weight property contract."""
+    """`astar` returns a weighted path using the same edge-weight property."""
     with arcadedb.create_database(temp_db_path) as db:
         rids = _setup_weighted_graph(db)