fix: correct knowledge cli import path in main.py

Author: mdesmet

src/datapilot/cli/main.py

@@ -8,7 +8,7 @@
 
 from datapilot.core.mcp_utils.mcp import mcp
 from datapilot.core.platforms.dbt.cli.cli import dbt
-from datapilot.core.knowledge import cli as knowledge
+from datapilot.core.knowledge.cli import cli as knowledge
 
 
 def load_config_from_file():