Fix createexperiment API syntax in tutorial and examples

Fixes incorrect keyword argument usage for the 'name' parameter.
The createexperiment function requires 'name' as a positional argument,
not a keyword argument.

Before: createexperiment(mlf; name="price-paths")
After:  createexperiment(mlf, "price-paths")

Fixes #62

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: RomeoV

docs/src/tutorial.md

@@ -72,7 +72,7 @@ p = plot()
 mlf = MLFlow("http://localhost:5000/api")
 
 # Initiate new experiment
-experiment_id = createexperiment(mlf; name="price-paths")
+experiment_id = createexperiment(mlf, "price-paths")
 
 # Create a run in the new experiment
 exprun = createrun(mlf, experiment_id)

examples/simple-with-mlflow.jl

@@ -21,7 +21,7 @@ p = plot()
 mlf = MLFlow("http://localhost:5000/api")
 
 # Initiate new experiment
-experiment_id = createexperiment(mlf; name="price-paths")
+experiment_id = createexperiment(mlf, "price-paths")
 
 # Create a run in the new experiment
 exprun = createrun(mlf, experiment_id)